20215575405

素因数分解:

$3^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{359}}^1\times {\mathrm{853}}^1$

素因数の和:1392

約数の個数: 80

約数和(自身を含む): 36605036160

約数和(自身を除く): 16389460755

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 163, 359, 405, 489, 815, 853, 1077, 1467, 1795, 2445, 2559, 3231, 4265, 4401, 5385, 7335, 7677, 9693, 12795, 13203, 16155, 22005, 23031, 29079, 38385, 48465, 58517, 66015, 69093, 115155, 139039, 145395, 175551, 292585, 306227, 345465, 417117, 526653, 695195, 877755, 918681, 1251351, 1531135, 1579959, 2085585, 2633265, 2756043, 3754053, 4593405, 4739877, 6256755, 7899795, 8268129, 11262159, 13780215, 18770265, 23699385, 24804387, 41340645, 49915001, 56310795, 124021935, 149745003, 249575005, 449235009, 748725015, 1347705027, 2246175045, 4043115081, 6738525135, 20215575405]

約数ペア:

[(1, 20215575405), (3, 6738525135), (5, 4043115081), (9, 2246175045), (15, 1347705027), (27, 748725015), (45, 449235009), (81, 249575005), (135, 149745003), (163, 124021935), (359, 56310795), (405, 49915001), (489, 41340645), (815, 24804387), (853, 23699385), (1077, 18770265), (1467, 13780215), (1795, 11262159), (2445, 8268129), (2559, 7899795), (3231, 6256755), (4265, 4739877), (4401, 4593405), (5385, 3754053), (7335, 2756043), (7677, 2633265), (9693, 2085585), (12795, 1579959), (13203, 1531135), (16155, 1251351), (22005, 918681), (23031, 877755), (29079, 695195), (38385, 526653), (48465, 417117), (58517, 345465), (66015, 306227), (69093, 292585), (115155, 175551), (139039, 145395)]