21161816

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{3037}}^1$

素因数の和:3123

約数の個数: 32

約数和(自身を含む): 43382640

約数和(自身を除く): 22220824

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 3037, 3484, 6074, 6968, 12148, 24296, 39481, 78962, 157924, 203479, 315848, 406958, 813916, 1627832, 2645227, 5290454, 10580908, 21161816]

約数ペア:

[(1, 21161816), (2, 10580908), (4, 5290454), (8, 2645227), (13, 1627832), (26, 813916), (52, 406958), (67, 315848), (104, 203479), (134, 157924), (268, 78962), (536, 39481), (871, 24296), (1742, 12148), (3037, 6968), (3484, 6074)]