20218752775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1\times {\mathrm{6983}}^1$

素因数の和:7216

約数の個数: 48

約数和(自身を含む): 27643230720

約数和(自身を除く): 7424477945

約数列:

[1, 5, 13, 25, 59, 65, 151, 295, 325, 755, 767, 1475, 1963, 3775, 3835, 6983, 8909, 9815, 19175, 34915, 44545, 49075, 90779, 115817, 174575, 222725, 411997, 453895, 579085, 1054433, 2059985, 2269475, 2895425, 5272165, 5355961, 10299925, 13707629, 26360825, 26779805, 62211547, 68538145, 133899025, 311057735, 342690725, 808750111, 1555288675, 4043750555, 20218752775]

約数ペア:

[(1, 20218752775), (5, 4043750555), (13, 1555288675), (25, 808750111), (59, 342690725), (65, 311057735), (151, 133899025), (295, 68538145), (325, 62211547), (755, 26779805), (767, 26360825), (1475, 13707629), (1963, 10299925), (3775, 5355961), (3835, 5272165), (6983, 2895425), (8909, 2269475), (9815, 2059985), (19175, 1054433), (34915, 579085), (44545, 453895), (49075, 411997), (90779, 222725), (115817, 174575)]