21206760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2237}}^1$

素因数の和:2330

約数の個数: 64

約数和(自身を含む): 64454400

約数和(自身を除く): 43247640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 2237, 2370, 3160, 4474, 4740, 6711, 8948, 9480, 11185, 13422, 17896, 22370, 26844, 33555, 44740, 53688, 67110, 89480, 134220, 176723, 268440, 353446, 530169, 706892, 883615, 1060338, 1413784, 1767230, 2120676, 2650845, 3534460, 4241352, 5301690, 7068920, 10603380, 21206760]

約数ペア:

[(1, 21206760), (2, 10603380), (3, 7068920), (4, 5301690), (5, 4241352), (6, 3534460), (8, 2650845), (10, 2120676), (12, 1767230), (15, 1413784), (20, 1060338), (24, 883615), (30, 706892), (40, 530169), (60, 353446), (79, 268440), (120, 176723), (158, 134220), (237, 89480), (316, 67110), (395, 53688), (474, 44740), (632, 33555), (790, 26844), (948, 22370), (1185, 17896), (1580, 13422), (1896, 11185), (2237, 9480), (2370, 8948), (3160, 6711), (4474, 4740)]