78015920

素因数分解:

$2^4\times 5^1\times {\mathrm{975199}}^1$

素因数の和:975212

約数の個数: 20

約数和(自身を含む): 181387200

約数和(自身を除く): 103371280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 975199, 1950398, 3900796, 4875995, 7801592, 9751990, 15603184, 19503980, 39007960, 78015920]

約数ペア:

[(1, 78015920), (2, 39007960), (4, 19503980), (5, 15603184), (8, 9751990), (10, 7801592), (16, 4875995), (20, 3900796), (40, 1950398), (80, 975199)]