21471664

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8233}}^1$

素因数の和:8404

約数の個数: 20

約数和(自身を含む): 41861656

約数和(自身を除く): 20389992

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8233, 16466, 32932, 65864, 131728, 1341979, 2683958, 5367916, 10735832, 21471664]

約数ペア:

[(1, 21471664), (2, 10735832), (4, 5367916), (8, 2683958), (16, 1341979), (163, 131728), (326, 65864), (652, 32932), (1304, 16466), (2608, 8233)]