20098925

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 31819392

約数和(自身を除く): 11720467

約数列:

[1, 5, 7, 11, 25, 35, 53, 55, 77, 175, 197, 265, 275, 371, 385, 583, 985, 1325, 1379, 1855, 1925, 2167, 2915, 4081, 4925, 6895, 9275, 10441, 10835, 14575, 15169, 20405, 34475, 52205, 54175, 73087, 75845, 102025, 114851, 261025, 365435, 379225, 574255, 803957, 1827175, 2871275, 4019785, 20098925]

約数ペア:

[(1, 20098925), (5, 4019785), (7, 2871275), (11, 1827175), (25, 803957), (35, 574255), (53, 379225), (55, 365435), (77, 261025), (175, 114851), (197, 102025), (265, 75845), (275, 73087), (371, 54175), (385, 52205), (583, 34475), (985, 20405), (1325, 15169), (1379, 14575), (1855, 10835), (1925, 10441), (2167, 9275), (2915, 6895), (4081, 4925)]