21804780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:679

約数の個数: 96

約数和(自身を含む): 66447360

約数和(自身を除く): 44642580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 31, 38, 57, 60, 62, 76, 93, 95, 114, 124, 155, 186, 190, 228, 285, 310, 372, 380, 465, 570, 589, 617, 620, 930, 1140, 1178, 1234, 1767, 1851, 1860, 2356, 2468, 2945, 3085, 3534, 3702, 5890, 6170, 7068, 7404, 8835, 9255, 11723, 11780, 12340, 17670, 18510, 19127, 23446, 35169, 35340, 37020, 38254, 46892, 57381, 58615, 70338, 76508, 95635, 114762, 117230, 140676, 175845, 191270, 229524, 234460, 286905, 351690, 363413, 382540, 573810, 703380, 726826, 1090239, 1147620, 1453652, 1817065, 2180478, 3634130, 4360956, 5451195, 7268260, 10902390, 21804780]

約数ペア:

[(1, 21804780), (2, 10902390), (3, 7268260), (4, 5451195), (5, 4360956), (6, 3634130), (10, 2180478), (12, 1817065), (15, 1453652), (19, 1147620), (20, 1090239), (30, 726826), (31, 703380), (38, 573810), (57, 382540), (60, 363413), (62, 351690), (76, 286905), (93, 234460), (95, 229524), (114, 191270), (124, 175845), (155, 140676), (186, 117230), (190, 114762), (228, 95635), (285, 76508), (310, 70338), (372, 58615), (380, 57381), (465, 46892), (570, 38254), (589, 37020), (617, 35340), (620, 35169), (930, 23446), (1140, 19127), (1178, 18510), (1234, 17670), (1767, 12340), (1851, 11780), (1860, 11723), (2356, 9255), (2468, 8835), (2945, 7404), (3085, 7068), (3534, 6170), (3702, 5890)]