64438700

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{3271}}^1$

素因数の和:3482

約数の個数: 36

約数和(自身を含む): 140584752

約数和(自身を除く): 76146052

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 788, 985, 1970, 3271, 3940, 4925, 6542, 9850, 13084, 16355, 19700, 32710, 65420, 81775, 163550, 327100, 644387, 1288774, 2577548, 3221935, 6443870, 12887740, 16109675, 32219350, 64438700]

約数ペア:

[(1, 64438700), (2, 32219350), (4, 16109675), (5, 12887740), (10, 6443870), (20, 3221935), (25, 2577548), (50, 1288774), (100, 644387), (197, 327100), (394, 163550), (788, 81775), (985, 65420), (1970, 32710), (3271, 19700), (3940, 16355), (4925, 13084), (6542, 9850)]