219949940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{5591}}^1$

素因数の和:5888

約数の個数: 48

約数和(自身を含む): 529853184

約数和(自身を除く): 309903244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 281, 562, 1124, 1405, 1967, 2810, 3934, 5591, 5620, 7868, 9835, 11182, 19670, 22364, 27955, 39137, 39340, 55910, 78274, 111820, 156548, 195685, 391370, 782740, 1571071, 3142142, 6284284, 7855355, 10997497, 15710710, 21994994, 31421420, 43989988, 54987485, 109974970, 219949940]

約数ペア:

[(1, 219949940), (2, 109974970), (4, 54987485), (5, 43989988), (7, 31421420), (10, 21994994), (14, 15710710), (20, 10997497), (28, 7855355), (35, 6284284), (70, 3142142), (140, 1571071), (281, 782740), (562, 391370), (1124, 195685), (1405, 156548), (1967, 111820), (2810, 78274), (3934, 55910), (5591, 39340), (5620, 39137), (7868, 27955), (9835, 22364), (11182, 19670)]