20149675

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{521}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 32622912

約数和(自身を除く): 12473237

約数列:

[1, 5, 7, 13, 17, 25, 35, 65, 85, 91, 119, 175, 221, 325, 425, 455, 521, 595, 1105, 1547, 2275, 2605, 2975, 3647, 5525, 6773, 7735, 8857, 13025, 18235, 33865, 38675, 44285, 47411, 61999, 91175, 115141, 169325, 221425, 237055, 309995, 575705, 805987, 1185275, 1549975, 2878525, 4029935, 20149675]

約数ペア:

[(1, 20149675), (5, 4029935), (7, 2878525), (13, 1549975), (17, 1185275), (25, 805987), (35, 575705), (65, 309995), (85, 237055), (91, 221425), (119, 169325), (175, 115141), (221, 91175), (325, 61999), (425, 47411), (455, 44285), (521, 38675), (595, 33865), (1105, 18235), (1547, 13025), (2275, 8857), (2605, 7735), (2975, 6773), (3647, 5525)]