25720880

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7477}}^1$

素因数の和:7533

約数の個数: 40

約数和(自身を含む): 61199952

約数和(自身を除く): 35479072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 7477, 14954, 29908, 37385, 59816, 74770, 119632, 149540, 299080, 321511, 598160, 643022, 1286044, 1607555, 2572088, 3215110, 5144176, 6430220, 12860440, 25720880]

約数ペア:

[(1, 25720880), (2, 12860440), (4, 6430220), (5, 5144176), (8, 3215110), (10, 2572088), (16, 1607555), (20, 1286044), (40, 643022), (43, 598160), (80, 321511), (86, 299080), (172, 149540), (215, 119632), (344, 74770), (430, 59816), (688, 37385), (860, 29908), (1720, 14954), (3440, 7477)]