81188380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1439}}^1$

素因数の和:1499

約数の個数: 96

約数和(自身を含む): 216760320

約数和(自身を除く): 135571940

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 260, 310, 364, 403, 434, 455, 620, 806, 868, 910, 1085, 1439, 1612, 1820, 2015, 2170, 2821, 2878, 4030, 4340, 5642, 5756, 7195, 8060, 10073, 11284, 14105, 14390, 18707, 20146, 28210, 28780, 37414, 40292, 44609, 50365, 56420, 74828, 89218, 93535, 100730, 130949, 178436, 187070, 201460, 223045, 261898, 312263, 374140, 446090, 523796, 579917, 624526, 654745, 892180, 1159834, 1249052, 1309490, 1561315, 2319668, 2618980, 2899585, 3122630, 4059419, 5799170, 6245260, 8118838, 11598340, 16237676, 20297095, 40594190, 81188380]

約数ペア:

[(1, 81188380), (2, 40594190), (4, 20297095), (5, 16237676), (7, 11598340), (10, 8118838), (13, 6245260), (14, 5799170), (20, 4059419), (26, 3122630), (28, 2899585), (31, 2618980), (35, 2319668), (52, 1561315), (62, 1309490), (65, 1249052), (70, 1159834), (91, 892180), (124, 654745), (130, 624526), (140, 579917), (155, 523796), (182, 446090), (217, 374140), (260, 312263), (310, 261898), (364, 223045), (403, 201460), (434, 187070), (455, 178436), (620, 130949), (806, 100730), (868, 93535), (910, 89218), (1085, 74828), (1439, 56420), (1612, 50365), (1820, 44609), (2015, 40292), (2170, 37414), (2821, 28780), (2878, 28210), (4030, 20146), (4340, 18707), (5642, 14390), (5756, 14105), (7195, 11284), (8060, 10073)]