20801428

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{1433}}^1$

素因数の和:1647

約数の個数: 24

約数和(自身を含む): 38545920

約数和(自身を除く): 17744492

約数列:

[1, 2, 4, 19, 38, 76, 191, 382, 764, 1433, 2866, 3629, 5732, 7258, 14516, 27227, 54454, 108908, 273703, 547406, 1094812, 5200357, 10400714, 20801428]

約数ペア:

[(1, 20801428), (2, 10400714), (4, 5200357), (19, 1094812), (38, 547406), (76, 273703), (191, 108908), (382, 54454), (764, 27227), (1433, 14516), (2866, 7258), (3629, 5732)]