21627916

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{647}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 38810016

約数和(自身を除く): 17182100

約数列:

[1, 2, 4, 61, 122, 137, 244, 274, 548, 647, 1294, 2588, 8357, 16714, 33428, 39467, 78934, 88639, 157868, 177278, 354556, 5406979, 10813958, 21627916]

約数ペア:

[(1, 21627916), (2, 10813958), (4, 5406979), (61, 354556), (122, 177278), (137, 157868), (244, 88639), (274, 78934), (548, 39467), (647, 33428), (1294, 16714), (2588, 8357)]