78842840

素因数分解:

$2^3\times 5^1\times {\mathrm{1049}}^1\times {\mathrm{1879}}^1$

素因数の和:2939

約数の個数: 32

約数和(自身を含む): 177660000

約数和(自身を除く): 98817160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1049, 1879, 2098, 3758, 4196, 5245, 7516, 8392, 9395, 10490, 15032, 18790, 20980, 37580, 41960, 75160, 1971071, 3942142, 7884284, 9855355, 15768568, 19710710, 39421420, 78842840]

約数ペア:

[(1, 78842840), (2, 39421420), (4, 19710710), (5, 15768568), (8, 9855355), (10, 7884284), (20, 3942142), (40, 1971071), (1049, 75160), (1879, 41960), (2098, 37580), (3758, 20980), (4196, 18790), (5245, 15032), (7516, 10490), (8392, 9395)]