208408040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{168071}}^1$

素因数の和:168113

約数の個数: 32

約数和(自身を含む): 484047360

約数和(自身を除く): 275639320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 168071, 336142, 672284, 840355, 1344568, 1680710, 3361420, 5210201, 6722840, 10420402, 20840804, 26051005, 41681608, 52102010, 104204020, 208408040]

約数ペア:

[(1, 208408040), (2, 104204020), (4, 52102010), (5, 41681608), (8, 26051005), (10, 20840804), (20, 10420402), (31, 6722840), (40, 5210201), (62, 3361420), (124, 1680710), (155, 1344568), (248, 840355), (310, 672284), (620, 336142), (1240, 168071)]