21405176

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{12107}}^1$

素因数の和:12143

約数の個数: 32

約数和(自身を含む): 45768240

約数和(自身を除く): 24363064

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 12107, 24214, 48428, 96856, 157391, 205819, 314782, 411638, 629564, 823276, 1259128, 1646552, 2675647, 5351294, 10702588, 21405176]

約数ペア:

[(1, 21405176), (2, 10702588), (4, 5351294), (8, 2675647), (13, 1646552), (17, 1259128), (26, 823276), (34, 629564), (52, 411638), (68, 314782), (104, 205819), (136, 157391), (221, 96856), (442, 48428), (884, 24214), (1768, 12107)]