18403780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2549}}^1$

素因数の和:2596

約数の個数: 36

約数和(自身を含む): 40805100

約数和(自身を除く): 22401320

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2549, 3610, 5098, 7220, 10196, 12745, 25490, 48431, 50980, 96862, 193724, 242155, 484310, 920189, 968620, 1840378, 3680756, 4600945, 9201890, 18403780]

約数ペア:

[(1, 18403780), (2, 9201890), (4, 4600945), (5, 3680756), (10, 1840378), (19, 968620), (20, 920189), (38, 484310), (76, 242155), (95, 193724), (190, 96862), (361, 50980), (380, 48431), (722, 25490), (1444, 12745), (1805, 10196), (2549, 7220), (3610, 5098)]