28818725

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{359}}^1$

素因数の和:414

約数の個数: 36

約数和(自身を含む): 40845600

約数和(自身を除く): 12026875

約数列:

[1, 5, 13, 19, 25, 65, 95, 169, 247, 325, 359, 475, 845, 1235, 1795, 3211, 4225, 4667, 6175, 6821, 8975, 16055, 23335, 34105, 60671, 80275, 88673, 116675, 170525, 303355, 443365, 1152749, 1516775, 2216825, 5763745, 28818725]

約数ペア:

[(1, 28818725), (5, 5763745), (13, 2216825), (19, 1516775), (25, 1152749), (65, 443365), (95, 303355), (169, 170525), (247, 116675), (325, 88673), (359, 80275), (475, 60671), (845, 34105), (1235, 23335), (1795, 16055), (3211, 8975), (4225, 6821), (4667, 6175)]