1989980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 4475520

約数和(自身を除く): 2485540

約数列:

[1, 2, 4, 5, 10, 20, 29, 47, 58, 73, 94, 116, 145, 146, 188, 235, 290, 292, 365, 470, 580, 730, 940, 1363, 1460, 2117, 2726, 3431, 4234, 5452, 6815, 6862, 8468, 10585, 13630, 13724, 17155, 21170, 27260, 34310, 42340, 68620, 99499, 198998, 397996, 497495, 994990, 1989980]

約数ペア:

[(1, 1989980), (2, 994990), (4, 497495), (5, 397996), (10, 198998), (20, 99499), (29, 68620), (47, 42340), (58, 34310), (73, 27260), (94, 21170), (116, 17155), (145, 13724), (146, 13630), (188, 10585), (235, 8468), (290, 6862), (292, 6815), (365, 5452), (470, 4234), (580, 3431), (730, 2726), (940, 2117), (1363, 1460)]