81130280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:160

約数の個数: 192

約数和(自身を含む): 239345280

約数和(自身を除く): 158215000

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 53, 55, 56, 70, 71, 77, 88, 98, 106, 110, 140, 142, 154, 196, 212, 220, 245, 265, 280, 284, 308, 355, 371, 385, 392, 424, 440, 490, 497, 530, 539, 568, 583, 616, 710, 742, 770, 781, 980, 994, 1060, 1078, 1166, 1420, 1484, 1540, 1562, 1855, 1960, 1988, 2120, 2156, 2332, 2485, 2597, 2695, 2840, 2915, 2968, 3080, 3124, 3479, 3710, 3763, 3905, 3976, 4081, 4312, 4664, 4970, 5194, 5390, 5467, 5830, 6248, 6958, 7420, 7526, 7810, 8162, 9940, 10388, 10780, 10934, 11660, 12985, 13916, 14840, 15052, 15620, 16324, 17395, 18815, 19880, 20405, 20776, 21560, 21868, 23320, 25970, 26341, 27335, 27832, 28567, 30104, 31240, 32648, 34790, 37630, 38269, 40810, 41393, 43736, 51940, 52682, 54670, 57134, 69580, 75260, 76538, 81620, 82786, 103880, 105364, 109340, 114268, 131705, 139160, 142835, 150520, 153076, 163240, 165572, 184387, 191345, 206965, 210728, 218680, 228536, 263410, 285670, 289751, 306152, 331144, 368774, 382690, 413930, 526820, 571340, 579502, 737548, 765380, 827860, 921935, 1053640, 1142680, 1159004, 1448755, 1475096, 1530760, 1655720, 1843870, 2028257, 2318008, 2897510, 3687740, 4056514, 5795020, 7375480, 8113028, 10141285, 11590040, 16226056, 20282570, 40565140, 81130280]

約数ペア:

[(1, 81130280), (2, 40565140), (4, 20282570), (5, 16226056), (7, 11590040), (8, 10141285), (10, 8113028), (11, 7375480), (14, 5795020), (20, 4056514), (22, 3687740), (28, 2897510), (35, 2318008), (40, 2028257), (44, 1843870), (49, 1655720), (53, 1530760), (55, 1475096), (56, 1448755), (70, 1159004), (71, 1142680), (77, 1053640), (88, 921935), (98, 827860), (106, 765380), (110, 737548), (140, 579502), (142, 571340), (154, 526820), (196, 413930), (212, 382690), (220, 368774), (245, 331144), (265, 306152), (280, 289751), (284, 285670), (308, 263410), (355, 228536), (371, 218680), (385, 210728), (392, 206965), (424, 191345), (440, 184387), (490, 165572), (497, 163240), (530, 153076), (539, 150520), (568, 142835), (583, 139160), (616, 131705), (710, 114268), (742, 109340), (770, 105364), (781, 103880), (980, 82786), (994, 81620), (1060, 76538), (1078, 75260), (1166, 69580), (1420, 57134), (1484, 54670), (1540, 52682), (1562, 51940), (1855, 43736), (1960, 41393), (1988, 40810), (2120, 38269), (2156, 37630), (2332, 34790), (2485, 32648), (2597, 31240), (2695, 30104), (2840, 28567), (2915, 27832), (2968, 27335), (3080, 26341), (3124, 25970), (3479, 23320), (3710, 21868), (3763, 21560), (3905, 20776), (3976, 20405), (4081, 19880), (4312, 18815), (4664, 17395), (4970, 16324), (5194, 15620), (5390, 15052), (5467, 14840), (5830, 13916), (6248, 12985), (6958, 11660), (7420, 10934), (7526, 10780), (7810, 10388), (8162, 9940)]