128839240

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 296472960

約数和(自身を除く): 167633720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 151, 166, 257, 302, 332, 415, 514, 604, 664, 755, 830, 1028, 1208, 1285, 1510, 1660, 2056, 2570, 3020, 3320, 5140, 6040, 10280, 12533, 21331, 25066, 38807, 42662, 50132, 62665, 77614, 85324, 100264, 106655, 125330, 155228, 170648, 194035, 213310, 250660, 310456, 388070, 426620, 501320, 776140, 853240, 1552280, 3220981, 6441962, 12883924, 16104905, 25767848, 32209810, 64419620, 128839240]

約数ペア:

[(1, 128839240), (2, 64419620), (4, 32209810), (5, 25767848), (8, 16104905), (10, 12883924), (20, 6441962), (40, 3220981), (83, 1552280), (151, 853240), (166, 776140), (257, 501320), (302, 426620), (332, 388070), (415, 310456), (514, 250660), (604, 213310), (664, 194035), (755, 170648), (830, 155228), (1028, 125330), (1208, 106655), (1285, 100264), (1510, 85324), (1660, 77614), (2056, 62665), (2570, 50132), (3020, 42662), (3320, 38807), (5140, 25066), (6040, 21331), (10280, 12533)]