15740440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6451}}^1$

素因数の和:6523

約数の個数: 32

約数和(自身を含む): 36002160

約数和(自身を除く): 20261720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 6451, 12902, 25804, 32255, 51608, 64510, 129020, 258040, 393511, 787022, 1574044, 1967555, 3148088, 3935110, 7870220, 15740440]

約数ペア:

[(1, 15740440), (2, 7870220), (4, 3935110), (5, 3148088), (8, 1967555), (10, 1574044), (20, 787022), (40, 393511), (61, 258040), (122, 129020), (244, 64510), (305, 51608), (488, 32255), (610, 25804), (1220, 12902), (2440, 6451)]