28167880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2851}}^1$

素因数の和:2894

約数の個数: 64

約数和(自身を含む): 71870400

約数和(自身を除く): 43702520

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 2851, 4940, 5702, 9880, 11404, 14255, 22808, 28510, 37063, 54169, 57020, 74126, 108338, 114040, 148252, 185315, 216676, 270845, 296504, 370630, 433352, 541690, 704197, 741260, 1083380, 1408394, 1482520, 2166760, 2816788, 3520985, 5633576, 7041970, 14083940, 28167880]

約数ペア:

[(1, 28167880), (2, 14083940), (4, 7041970), (5, 5633576), (8, 3520985), (10, 2816788), (13, 2166760), (19, 1482520), (20, 1408394), (26, 1083380), (38, 741260), (40, 704197), (52, 541690), (65, 433352), (76, 370630), (95, 296504), (104, 270845), (130, 216676), (152, 185315), (190, 148252), (247, 114040), (260, 108338), (380, 74126), (494, 57020), (520, 54169), (760, 37063), (988, 28510), (1235, 22808), (1976, 14255), (2470, 11404), (2851, 9880), (4940, 5702)]