251481490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:667

約数の個数: 64

約数和(自身を含む): 505128960

約数和(自身を除く): 253647470

約数列:

[1, 2, 5, 10, 13, 26, 47, 65, 79, 94, 130, 158, 235, 395, 470, 521, 611, 790, 1027, 1042, 1222, 2054, 2605, 3055, 3713, 5135, 5210, 6110, 6773, 7426, 10270, 13546, 18565, 24487, 33865, 37130, 41159, 48269, 48974, 67730, 82318, 96538, 122435, 205795, 241345, 244870, 318331, 411590, 482690, 535067, 636662, 1070134, 1591655, 1934473, 2675335, 3183310, 3868946, 5350670, 9672365, 19344730, 25148149, 50296298, 125740745, 251481490]

約数ペア:

[(1, 251481490), (2, 125740745), (5, 50296298), (10, 25148149), (13, 19344730), (26, 9672365), (47, 5350670), (65, 3868946), (79, 3183310), (94, 2675335), (130, 1934473), (158, 1591655), (235, 1070134), (395, 636662), (470, 535067), (521, 482690), (611, 411590), (790, 318331), (1027, 244870), (1042, 241345), (1222, 205795), (2054, 122435), (2605, 96538), (3055, 82318), (3713, 67730), (5135, 48974), (5210, 48269), (6110, 41159), (6773, 37130), (7426, 33865), (10270, 24487), (13546, 18565)]