21183256

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{39521}}^1$

素因数の和:39594

約数の個数: 16

約数和(自身を含む): 40312440

約数和(自身を除く): 19129184

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 39521, 79042, 158084, 316168, 2647907, 5295814, 10591628, 21183256]

約数ペア:

[(1, 21183256), (2, 10591628), (4, 5295814), (8, 2647907), (67, 316168), (134, 158084), (268, 79042), (536, 39521)]