20156944

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40639}}^1$

素因数の和:40678

約数の個数: 20

約数和(自身を含む): 40314880

約数和(自身を除く): 20157936

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40639, 81278, 162556, 325112, 650224, 1259809, 2519618, 5039236, 10078472, 20156944]

約数ペア:

[(1, 20156944), (2, 10078472), (4, 5039236), (8, 2519618), (16, 1259809), (31, 650224), (62, 325112), (124, 162556), (248, 81278), (496, 40639)]