19959536

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40241}}^1$

素因数の和:40280

約数の個数: 20

約数和(自身を含む): 39920064

約数和(自身を除く): 19960528

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40241, 80482, 160964, 321928, 643856, 1247471, 2494942, 4989884, 9979768, 19959536]

約数ペア:

[(1, 19959536), (2, 9979768), (4, 4989884), (8, 2494942), (16, 1247471), (31, 643856), (62, 321928), (124, 160964), (248, 80482), (496, 40241)]