81302520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:270

約数の個数: 192

約数和(自身を含む): 279331200

約数和(自身を除く): 198028680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 52, 57, 60, 65, 76, 78, 95, 104, 114, 120, 130, 152, 156, 169, 190, 195, 211, 228, 247, 260, 285, 312, 338, 380, 390, 422, 456, 494, 507, 520, 570, 633, 676, 741, 760, 780, 844, 845, 988, 1014, 1055, 1140, 1235, 1266, 1352, 1482, 1560, 1688, 1690, 1976, 2028, 2110, 2280, 2470, 2532, 2535, 2743, 2964, 3165, 3211, 3380, 3705, 4009, 4056, 4220, 4940, 5064, 5070, 5486, 5928, 6330, 6422, 6760, 7410, 8018, 8229, 8440, 9633, 9880, 10140, 10972, 12027, 12660, 12844, 13715, 14820, 16036, 16055, 16458, 19266, 20045, 20280, 21944, 24054, 25320, 25688, 27430, 29640, 32072, 32110, 32916, 35659, 38532, 40090, 41145, 48108, 48165, 52117, 54860, 60135, 64220, 65832, 71318, 77064, 80180, 82290, 96216, 96330, 104234, 106977, 109720, 120270, 128440, 142636, 156351, 160360, 164580, 178295, 192660, 208468, 213954, 240540, 260585, 285272, 312702, 329160, 356590, 385320, 416936, 427908, 481080, 521170, 534885, 625404, 677521, 713180, 781755, 855816, 1042340, 1069770, 1250808, 1355042, 1426360, 1563510, 2032563, 2084680, 2139540, 2710084, 3127020, 3387605, 4065126, 4279080, 5420168, 6254040, 6775210, 8130252, 10162815, 13550420, 16260504, 20325630, 27100840, 40651260, 81302520]

約数ペア:

[(1, 81302520), (2, 40651260), (3, 27100840), (4, 20325630), (5, 16260504), (6, 13550420), (8, 10162815), (10, 8130252), (12, 6775210), (13, 6254040), (15, 5420168), (19, 4279080), (20, 4065126), (24, 3387605), (26, 3127020), (30, 2710084), (38, 2139540), (39, 2084680), (40, 2032563), (52, 1563510), (57, 1426360), (60, 1355042), (65, 1250808), (76, 1069770), (78, 1042340), (95, 855816), (104, 781755), (114, 713180), (120, 677521), (130, 625404), (152, 534885), (156, 521170), (169, 481080), (190, 427908), (195, 416936), (211, 385320), (228, 356590), (247, 329160), (260, 312702), (285, 285272), (312, 260585), (338, 240540), (380, 213954), (390, 208468), (422, 192660), (456, 178295), (494, 164580), (507, 160360), (520, 156351), (570, 142636), (633, 128440), (676, 120270), (741, 109720), (760, 106977), (780, 104234), (844, 96330), (845, 96216), (988, 82290), (1014, 80180), (1055, 77064), (1140, 71318), (1235, 65832), (1266, 64220), (1352, 60135), (1482, 54860), (1560, 52117), (1688, 48165), (1690, 48108), (1976, 41145), (2028, 40090), (2110, 38532), (2280, 35659), (2470, 32916), (2532, 32110), (2535, 32072), (2743, 29640), (2964, 27430), (3165, 25688), (3211, 25320), (3380, 24054), (3705, 21944), (4009, 20280), (4056, 20045), (4220, 19266), (4940, 16458), (5064, 16055), (5070, 16036), (5486, 14820), (5928, 13715), (6330, 12844), (6422, 12660), (6760, 12027), (7410, 10972), (8018, 10140), (8229, 9880), (8440, 9633)]