788721320

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1\times {\mathrm{1949}}^1$

素因数の和:2178

約数の個数: 64

約数和(自身を含む): 1813968000

約数和(自身を除く): 1025246680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 151, 268, 302, 335, 536, 604, 670, 755, 1208, 1340, 1510, 1949, 2680, 3020, 3898, 6040, 7796, 9745, 10117, 15592, 19490, 20234, 38980, 40468, 50585, 77960, 80936, 101170, 130583, 202340, 261166, 294299, 404680, 522332, 588598, 652915, 1044664, 1177196, 1305830, 1471495, 2354392, 2611660, 2942990, 5223320, 5885980, 11771960, 19718033, 39436066, 78872132, 98590165, 157744264, 197180330, 394360660, 788721320]

約数ペア:

[(1, 788721320), (2, 394360660), (4, 197180330), (5, 157744264), (8, 98590165), (10, 78872132), (20, 39436066), (40, 19718033), (67, 11771960), (134, 5885980), (151, 5223320), (268, 2942990), (302, 2611660), (335, 2354392), (536, 1471495), (604, 1305830), (670, 1177196), (755, 1044664), (1208, 652915), (1340, 588598), (1510, 522332), (1949, 404680), (2680, 294299), (3020, 261166), (3898, 202340), (6040, 130583), (7796, 101170), (9745, 80936), (10117, 77960), (15592, 50585), (19490, 40468), (20234, 38980)]