31226320

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3581}}^1$

素因数の和:3703

約数の個数: 40

約数和(自身を含む): 73287720

約数和(自身を除く): 42061400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3581, 4360, 7162, 8720, 14324, 17905, 28648, 35810, 57296, 71620, 143240, 286480, 390329, 780658, 1561316, 1951645, 3122632, 3903290, 6245264, 7806580, 15613160, 31226320]

約数ペア:

[(1, 31226320), (2, 15613160), (4, 7806580), (5, 6245264), (8, 3903290), (10, 3122632), (16, 1951645), (20, 1561316), (40, 780658), (80, 390329), (109, 286480), (218, 143240), (436, 71620), (545, 57296), (872, 35810), (1090, 28648), (1744, 17905), (2180, 14324), (3581, 8720), (4360, 7162)]