18686128

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{68699}}^1$

素因数の和:68724

約数の個数: 20

約数和(自身を含む): 38334600

約数和(自身を除く): 19648472

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 68699, 137398, 274796, 549592, 1099184, 1167883, 2335766, 4671532, 9343064, 18686128]

約数ペア:

[(1, 18686128), (2, 9343064), (4, 4671532), (8, 2335766), (16, 1167883), (17, 1099184), (34, 549592), (68, 274796), (136, 137398), (272, 68699)]