78928840

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{10331}}^1$

素因数の和:10533

約数の個数: 32

約数和(自身を含む): 178536960

約数和(自身を除く): 99608120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 10331, 20662, 41324, 51655, 82648, 103310, 206620, 413240, 1973221, 3946442, 7892884, 9866105, 15785768, 19732210, 39464420, 78928840]

約数ペア:

[(1, 78928840), (2, 39464420), (4, 19732210), (5, 15785768), (8, 9866105), (10, 7892884), (20, 3946442), (40, 1973221), (191, 413240), (382, 206620), (764, 103310), (955, 82648), (1528, 51655), (1910, 41324), (3820, 20662), (7640, 10331)]