78249880

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4783}}^1$

素因数の和:5203

約数の個数: 32

約数和(自身を含む): 176529600

約数和(自身を除く): 98279720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 4783, 8180, 9566, 16360, 19132, 23915, 38264, 47830, 95660, 191320, 1956247, 3912494, 7824988, 9781235, 15649976, 19562470, 39124940, 78249880]

約数ペア:

[(1, 78249880), (2, 39124940), (4, 19562470), (5, 15649976), (8, 9781235), (10, 7824988), (20, 3912494), (40, 1956247), (409, 191320), (818, 95660), (1636, 47830), (2045, 38264), (3272, 23915), (4090, 19132), (4783, 16360), (8180, 9566)]