18687308642

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{691}}^1\times {\mathrm{221671}}^1$

素因数の和:222425

約数の個数: 16

約数和(自身を含む): 28531846464

約数和(自身を除く): 9844537822

約数列:

[1, 2, 61, 122, 691, 1382, 42151, 84302, 221671, 443342, 13521931, 27043862, 153174661, 306349322, 9343654321, 18687308642]

約数ペア:

[(1, 18687308642), (2, 9343654321), (61, 306349322), (122, 153174661), (691, 27043862), (1382, 13521931), (42151, 443342), (84302, 221671)]