21242022040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{213359}}^1$

素因数の和:213520

約数の個数: 64

約数和(自身を含む): 50694336000

約数和(自身を除く): 29452313960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 131, 152, 190, 262, 380, 524, 655, 760, 1048, 1310, 2489, 2620, 4978, 5240, 9956, 12445, 19912, 24890, 49780, 99560, 213359, 426718, 853436, 1066795, 1706872, 2133590, 4053821, 4267180, 8107642, 8534360, 16215284, 20269105, 27950029, 32430568, 40538210, 55900058, 81076420, 111800116, 139750145, 162152840, 223600232, 279500290, 531050551, 559000580, 1062101102, 1118001160, 2124202204, 2655252755, 4248404408, 5310505510, 10621011020, 21242022040]

約数ペア:

[(1, 21242022040), (2, 10621011020), (4, 5310505510), (5, 4248404408), (8, 2655252755), (10, 2124202204), (19, 1118001160), (20, 1062101102), (38, 559000580), (40, 531050551), (76, 279500290), (95, 223600232), (131, 162152840), (152, 139750145), (190, 111800116), (262, 81076420), (380, 55900058), (524, 40538210), (655, 32430568), (760, 27950029), (1048, 20269105), (1310, 16215284), (2489, 8534360), (2620, 8107642), (4978, 4267180), (5240, 4053821), (9956, 2133590), (12445, 1706872), (19912, 1066795), (24890, 853436), (49780, 426718), (99560, 213359)]