208099575

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:353

約数の個数: 72

約数和(自身を含む): 386628528

約数和(自身を除く): 178528953

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 137, 157, 215, 225, 387, 411, 471, 645, 685, 785, 1075, 1233, 1413, 1935, 2055, 2355, 3225, 3425, 3925, 5891, 6165, 6751, 7065, 9675, 10275, 11775, 17673, 20253, 21509, 29455, 30825, 33755, 35325, 53019, 60759, 64527, 88365, 101265, 107545, 147275, 168775, 193581, 265095, 303795, 322635, 441825, 506325, 537725, 924887, 967905, 1325475, 1518975, 1613175, 2774661, 4624435, 4839525, 8323983, 13873305, 23122175, 41619915, 69366525, 208099575]

約数ペア:

[(1, 208099575), (3, 69366525), (5, 41619915), (9, 23122175), (15, 13873305), (25, 8323983), (43, 4839525), (45, 4624435), (75, 2774661), (129, 1613175), (137, 1518975), (157, 1325475), (215, 967905), (225, 924887), (387, 537725), (411, 506325), (471, 441825), (645, 322635), (685, 303795), (785, 265095), (1075, 193581), (1233, 168775), (1413, 147275), (1935, 107545), (2055, 101265), (2355, 88365), (3225, 64527), (3425, 60759), (3925, 53019), (5891, 35325), (6165, 33755), (6751, 30825), (7065, 29455), (9675, 21509), (10275, 20253), (11775, 17673)]