20874711

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 34784640

約数和(自身を除く): 13909929

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 143, 169, 197, 209, 247, 429, 507, 591, 627, 741, 1859, 2167, 2561, 2717, 3211, 3743, 5577, 6501, 7683, 8151, 9633, 11229, 28171, 33293, 35321, 41173, 48659, 84513, 99879, 105963, 123519, 145977, 366223, 535249, 632567, 1098669, 1605747, 1897701, 6958237, 20874711]

約数ペア:

[(1, 20874711), (3, 6958237), (11, 1897701), (13, 1605747), (19, 1098669), (33, 632567), (39, 535249), (57, 366223), (143, 145977), (169, 123519), (197, 105963), (209, 99879), (247, 84513), (429, 48659), (507, 41173), (591, 35321), (627, 33293), (741, 28171), (1859, 11229), (2167, 9633), (2561, 8151), (2717, 7683), (3211, 6501), (3743, 5577)]