81305560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:114

約数の個数: 256

約数和(自身を含む): 248832000

約数和(自身を除く): 167526440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 19, 20, 28, 29, 31, 34, 35, 38, 40, 56, 58, 62, 68, 70, 76, 85, 95, 116, 119, 124, 133, 136, 140, 145, 152, 155, 170, 190, 203, 217, 232, 238, 248, 266, 280, 290, 310, 323, 340, 380, 406, 434, 476, 493, 527, 532, 551, 580, 589, 595, 620, 646, 665, 680, 760, 812, 868, 899, 952, 986, 1015, 1054, 1064, 1085, 1102, 1160, 1178, 1190, 1240, 1292, 1330, 1615, 1624, 1736, 1798, 1972, 2030, 2108, 2170, 2204, 2261, 2356, 2380, 2465, 2584, 2635, 2660, 2755, 2945, 3230, 3451, 3596, 3689, 3857, 3944, 4060, 4123, 4216, 4340, 4408, 4495, 4522, 4712, 4760, 4930, 5270, 5320, 5510, 5890, 6293, 6460, 6902, 7192, 7378, 7714, 8120, 8246, 8680, 8990, 9044, 9367, 9860, 10013, 10540, 11020, 11305, 11780, 12586, 12920, 13804, 14756, 15283, 15428, 16492, 17081, 17255, 17980, 18088, 18445, 18734, 19285, 19720, 20026, 20615, 21080, 22040, 22610, 23560, 25172, 27608, 29512, 30566, 30856, 31465, 32984, 34162, 34510, 35960, 36890, 37468, 38570, 40052, 41230, 45220, 46835, 50065, 50344, 61132, 62930, 65569, 68324, 69020, 70091, 73780, 74936, 76415, 77140, 80104, 82460, 85405, 90440, 93670, 100130, 106981, 119567, 122264, 125860, 131138, 136648, 138040, 140182, 147560, 152830, 154280, 164920, 170810, 187340, 200260, 213962, 239134, 251720, 262276, 280364, 290377, 305660, 327845, 341620, 350455, 374680, 400520, 427924, 478268, 524552, 534905, 560728, 580754, 597835, 611320, 655690, 683240, 700910, 855848, 956536, 1069810, 1161508, 1195670, 1311380, 1401820, 1451885, 2032639, 2139620, 2323016, 2391340, 2622760, 2803640, 2903770, 4065278, 4279240, 4782680, 5807540, 8130556, 10163195, 11615080, 16261112, 20326390, 40652780, 81305560]

約数ペア:

[(1, 81305560), (2, 40652780), (4, 20326390), (5, 16261112), (7, 11615080), (8, 10163195), (10, 8130556), (14, 5807540), (17, 4782680), (19, 4279240), (20, 4065278), (28, 2903770), (29, 2803640), (31, 2622760), (34, 2391340), (35, 2323016), (38, 2139620), (40, 2032639), (56, 1451885), (58, 1401820), (62, 1311380), (68, 1195670), (70, 1161508), (76, 1069810), (85, 956536), (95, 855848), (116, 700910), (119, 683240), (124, 655690), (133, 611320), (136, 597835), (140, 580754), (145, 560728), (152, 534905), (155, 524552), (170, 478268), (190, 427924), (203, 400520), (217, 374680), (232, 350455), (238, 341620), (248, 327845), (266, 305660), (280, 290377), (290, 280364), (310, 262276), (323, 251720), (340, 239134), (380, 213962), (406, 200260), (434, 187340), (476, 170810), (493, 164920), (527, 154280), (532, 152830), (551, 147560), (580, 140182), (589, 138040), (595, 136648), (620, 131138), (646, 125860), (665, 122264), (680, 119567), (760, 106981), (812, 100130), (868, 93670), (899, 90440), (952, 85405), (986, 82460), (1015, 80104), (1054, 77140), (1064, 76415), (1085, 74936), (1102, 73780), (1160, 70091), (1178, 69020), (1190, 68324), (1240, 65569), (1292, 62930), (1330, 61132), (1615, 50344), (1624, 50065), (1736, 46835), (1798, 45220), (1972, 41230), (2030, 40052), (2108, 38570), (2170, 37468), (2204, 36890), (2261, 35960), (2356, 34510), (2380, 34162), (2465, 32984), (2584, 31465), (2635, 30856), (2660, 30566), (2755, 29512), (2945, 27608), (3230, 25172), (3451, 23560), (3596, 22610), (3689, 22040), (3857, 21080), (3944, 20615), (4060, 20026), (4123, 19720), (4216, 19285), (4340, 18734), (4408, 18445), (4495, 18088), (4522, 17980), (4712, 17255), (4760, 17081), (4930, 16492), (5270, 15428), (5320, 15283), (5510, 14756), (5890, 13804), (6293, 12920), (6460, 12586), (6902, 11780), (7192, 11305), (7378, 11020), (7714, 10540), (8120, 10013), (8246, 9860), (8680, 9367), (8990, 9044)]