1577779775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1997}}^1$

素因数の和:2061

約数の個数: 72

約数和(自身を含む): 2448285264

約数和(自身を除く): 870505489

約数列:

[1, 5, 11, 13, 17, 25, 55, 65, 85, 143, 169, 187, 221, 275, 325, 425, 715, 845, 935, 1105, 1859, 1997, 2431, 2873, 3575, 4225, 4675, 5525, 9295, 9985, 12155, 14365, 21967, 25961, 31603, 33949, 46475, 49925, 60775, 71825, 109835, 129805, 158015, 169745, 285571, 337493, 373439, 441337, 549175, 649025, 790075, 848725, 1427855, 1687465, 1867195, 2206685, 3712423, 4854707, 5737381, 7139275, 8437325, 9335975, 11033425, 18562115, 24273535, 28686905, 63111191, 92810575, 121367675, 143434525, 315555955, 1577779775]

約数ペア:

[(1, 1577779775), (5, 315555955), (11, 143434525), (13, 121367675), (17, 92810575), (25, 63111191), (55, 28686905), (65, 24273535), (85, 18562115), (143, 11033425), (169, 9335975), (187, 8437325), (221, 7139275), (275, 5737381), (325, 4854707), (425, 3712423), (715, 2206685), (845, 1867195), (935, 1687465), (1105, 1427855), (1859, 848725), (1997, 790075), (2431, 649025), (2873, 549175), (3575, 441337), (4225, 373439), (4675, 337493), (5525, 285571), (9295, 169745), (9985, 158015), (12155, 129805), (14365, 109835), (21967, 71825), (25961, 60775), (31603, 49925), (33949, 46475)]