21579660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1187}}^1$

素因数の和:1303

約数の個数: 72

約数和(自身を含む): 66162096

約数和(自身を除く): 44582436

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 180, 202, 303, 404, 505, 606, 909, 1010, 1187, 1212, 1515, 1818, 2020, 2374, 3030, 3561, 3636, 4545, 4748, 5935, 6060, 7122, 9090, 10683, 11870, 14244, 17805, 18180, 21366, 23740, 35610, 42732, 53415, 71220, 106830, 119887, 213660, 239774, 359661, 479548, 599435, 719322, 1078983, 1198870, 1438644, 1798305, 2157966, 2397740, 3596610, 4315932, 5394915, 7193220, 10789830, 21579660]

約数ペア:

[(1, 21579660), (2, 10789830), (3, 7193220), (4, 5394915), (5, 4315932), (6, 3596610), (9, 2397740), (10, 2157966), (12, 1798305), (15, 1438644), (18, 1198870), (20, 1078983), (30, 719322), (36, 599435), (45, 479548), (60, 359661), (90, 239774), (101, 213660), (180, 119887), (202, 106830), (303, 71220), (404, 53415), (505, 42732), (606, 35610), (909, 23740), (1010, 21366), (1187, 18180), (1212, 17805), (1515, 14244), (1818, 11870), (2020, 10683), (2374, 9090), (3030, 7122), (3561, 6060), (3636, 5935), (4545, 4748)]