18881060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4517}}^1$

素因数の和:4556

約数の個数: 48

約数和(自身を含む): 45541440

約数和(自身を除く): 26660380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4517, 9034, 18068, 22585, 45170, 49687, 85823, 90340, 99374, 171646, 198748, 248435, 343292, 429115, 496870, 858230, 944053, 993740, 1716460, 1888106, 3776212, 4720265, 9440530, 18881060]

約数ペア:

[(1, 18881060), (2, 9440530), (4, 4720265), (5, 3776212), (10, 1888106), (11, 1716460), (19, 993740), (20, 944053), (22, 858230), (38, 496870), (44, 429115), (55, 343292), (76, 248435), (95, 198748), (110, 171646), (190, 99374), (209, 90340), (220, 85823), (380, 49687), (418, 45170), (836, 22585), (1045, 18068), (2090, 9034), (4180, 4517)]