31448680

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7213}}^1$

素因数の和:7333

約数の個数: 32

約数和(自身を含む): 71418600

約数和(自身を除く): 39969920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 7213, 14426, 28852, 36065, 57704, 72130, 144260, 288520, 786217, 1572434, 3144868, 3931085, 6289736, 7862170, 15724340, 31448680]

約数ペア:

[(1, 31448680), (2, 15724340), (4, 7862170), (5, 6289736), (8, 3931085), (10, 3144868), (20, 1572434), (40, 786217), (109, 288520), (218, 144260), (436, 72130), (545, 57704), (872, 36065), (1090, 28852), (2180, 14426), (4360, 7213)]