21959960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1721}}^1$

素因数の和:1772

約数の個数: 64

約数和(自身を含む): 55792800

約数和(自身を除く): 33832840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1595, 1721, 2552, 3190, 3442, 6380, 6884, 8605, 12760, 13768, 17210, 18931, 34420, 37862, 49909, 68840, 75724, 94655, 99818, 151448, 189310, 199636, 249545, 378620, 399272, 499090, 548999, 757240, 998180, 1097998, 1996360, 2195996, 2744995, 4391992, 5489990, 10979980, 21959960]

約数ペア:

[(1, 21959960), (2, 10979980), (4, 5489990), (5, 4391992), (8, 2744995), (10, 2195996), (11, 1996360), (20, 1097998), (22, 998180), (29, 757240), (40, 548999), (44, 499090), (55, 399272), (58, 378620), (88, 249545), (110, 199636), (116, 189310), (145, 151448), (220, 99818), (232, 94655), (290, 75724), (319, 68840), (440, 49909), (580, 37862), (638, 34420), (1160, 18931), (1276, 17210), (1595, 13768), (1721, 12760), (2552, 8605), (3190, 6884), (3442, 6380)]