78910840

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{11813}}^1$

素因数の和:11991

約数の個数: 32

約数和(自身を含む): 178627680

約数和(自身を除く): 99716840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3340, 6680, 11813, 23626, 47252, 59065, 94504, 118130, 236260, 472520, 1972771, 3945542, 7891084, 9863855, 15782168, 19727710, 39455420, 78910840]

約数ペア:

[(1, 78910840), (2, 39455420), (4, 19727710), (5, 15782168), (8, 9863855), (10, 7891084), (20, 3945542), (40, 1972771), (167, 472520), (334, 236260), (668, 118130), (835, 94504), (1336, 59065), (1670, 47252), (3340, 23626), (6680, 11813)]