18693980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1\times {\mathrm{193}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 41065920

約数和(自身を除く): 22371940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 167, 193, 290, 334, 386, 580, 668, 772, 835, 965, 1670, 1930, 3340, 3860, 4843, 5597, 9686, 11194, 19372, 22388, 24215, 27985, 32231, 48430, 55970, 64462, 96860, 111940, 128924, 161155, 322310, 644620, 934699, 1869398, 3738796, 4673495, 9346990, 18693980]

約数ペア:

[(1, 18693980), (2, 9346990), (4, 4673495), (5, 3738796), (10, 1869398), (20, 934699), (29, 644620), (58, 322310), (116, 161155), (145, 128924), (167, 111940), (193, 96860), (290, 64462), (334, 55970), (386, 48430), (580, 32231), (668, 27985), (772, 24215), (835, 22388), (965, 19372), (1670, 11194), (1930, 9686), (3340, 5597), (3860, 4843)]