21873940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{5233}}^1$

素因数の和:5272

約数の個数: 48

約数和(自身を含む): 52758720

約数和(自身を除く): 30884780

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 5233, 10466, 20932, 26165, 52330, 57563, 99427, 104660, 115126, 198854, 230252, 287815, 397708, 497135, 575630, 994270, 1093697, 1151260, 1988540, 2187394, 4374788, 5468485, 10936970, 21873940]

約数ペア:

[(1, 21873940), (2, 10936970), (4, 5468485), (5, 4374788), (10, 2187394), (11, 1988540), (19, 1151260), (20, 1093697), (22, 994270), (38, 575630), (44, 497135), (55, 397708), (76, 287815), (95, 230252), (110, 198854), (190, 115126), (209, 104660), (220, 99427), (380, 57563), (418, 52330), (836, 26165), (1045, 20932), (2090, 10466), (4180, 5233)]