20571888

素因数分解:

$2^4\times 3^1\times {\mathrm{43}}^1\times {\mathrm{9967}}^1$

素因数の和:10021

約数の個数: 40

約数和(自身を含む): 54385408

約数和(自身を除く): 33813520

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 43, 48, 86, 129, 172, 258, 344, 516, 688, 1032, 2064, 9967, 19934, 29901, 39868, 59802, 79736, 119604, 159472, 239208, 428581, 478416, 857162, 1285743, 1714324, 2571486, 3428648, 5142972, 6857296, 10285944, 20571888]

約数ペア:

[(1, 20571888), (2, 10285944), (3, 6857296), (4, 5142972), (6, 3428648), (8, 2571486), (12, 1714324), (16, 1285743), (24, 857162), (43, 478416), (48, 428581), (86, 239208), (129, 159472), (172, 119604), (258, 79736), (344, 59802), (516, 39868), (688, 29901), (1032, 19934), (2064, 9967)]