15663654640

素因数分解:

$2^4\times 5^1\times {\mathrm{195795683}}^1$

素因数の和:195795696

約数の個数: 20

約数和(自身を含む): 36417997224

約数和(自身を除く): 20754342584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 195795683, 391591366, 783182732, 978978415, 1566365464, 1957956830, 3132730928, 3915913660, 7831827320, 15663654640]

約数ペア:

[(1, 15663654640), (2, 7831827320), (4, 3915913660), (5, 3132730928), (8, 1957956830), (10, 1566365464), (16, 978978415), (20, 783182732), (40, 391591366), (80, 195795683)]