18960220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{577}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 41948928

約数和(自身を除く): 22988708

約数列:

[1, 2, 4, 5, 10, 20, 31, 53, 62, 106, 124, 155, 212, 265, 310, 530, 577, 620, 1060, 1154, 1643, 2308, 2885, 3286, 5770, 6572, 8215, 11540, 16430, 17887, 30581, 32860, 35774, 61162, 71548, 89435, 122324, 152905, 178870, 305810, 357740, 611620, 948011, 1896022, 3792044, 4740055, 9480110, 18960220]

約数ペア:

[(1, 18960220), (2, 9480110), (4, 4740055), (5, 3792044), (10, 1896022), (20, 948011), (31, 611620), (53, 357740), (62, 305810), (106, 178870), (124, 152905), (155, 122324), (212, 89435), (265, 71548), (310, 61162), (530, 35774), (577, 32860), (620, 30581), (1060, 17887), (1154, 16430), (1643, 11540), (2308, 8215), (2885, 6572), (3286, 5770)]