20406440

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2671}}^1$

素因数の和:2873

約数の個数: 32

約数和(自身を含む): 46172160

約数和(自身を除く): 25765720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2671, 3820, 5342, 7640, 10684, 13355, 21368, 26710, 53420, 106840, 510161, 1020322, 2040644, 2550805, 4081288, 5101610, 10203220, 20406440]

約数ペア:

[(1, 20406440), (2, 10203220), (4, 5101610), (5, 4081288), (8, 2550805), (10, 2040644), (20, 1020322), (40, 510161), (191, 106840), (382, 53420), (764, 26710), (955, 21368), (1528, 13355), (1910, 10684), (2671, 7640), (3820, 5342)]