18064240

素因数分解:

$2^4\times 5^1\times {\mathrm{349}}^1\times {\mathrm{647}}^1$

素因数の和:1009

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 24120560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349, 647, 698, 1294, 1396, 1745, 2588, 2792, 3235, 3490, 5176, 5584, 6470, 6980, 10352, 12940, 13960, 25880, 27920, 51760, 225803, 451606, 903212, 1129015, 1806424, 2258030, 3612848, 4516060, 9032120, 18064240]

約数ペア:

[(1, 18064240), (2, 9032120), (4, 4516060), (5, 3612848), (8, 2258030), (10, 1806424), (16, 1129015), (20, 903212), (40, 451606), (80, 225803), (349, 51760), (647, 27920), (698, 25880), (1294, 13960), (1396, 12940), (1745, 10352), (2588, 6980), (2792, 6470), (3235, 5584), (3490, 5176)]