31017040

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3557}}^1$

素因数の和:3679

約数の個数: 40

約数和(自身を含む): 72796680

約数和(自身を除く): 41779640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3557, 4360, 7114, 8720, 14228, 17785, 28456, 35570, 56912, 71140, 142280, 284560, 387713, 775426, 1550852, 1938565, 3101704, 3877130, 6203408, 7754260, 15508520, 31017040]

約数ペア:

[(1, 31017040), (2, 15508520), (4, 7754260), (5, 6203408), (8, 3877130), (10, 3101704), (16, 1938565), (20, 1550852), (40, 775426), (80, 387713), (109, 284560), (218, 142280), (436, 71140), (545, 56912), (872, 35570), (1090, 28456), (1744, 17785), (2180, 14228), (3557, 8720), (4360, 7114)]