17855981

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 22498560

約数和(自身を除く): 4642579

約数列:

[1, 11, 13, 23, 61, 89, 143, 253, 299, 671, 793, 979, 1157, 1403, 2047, 3289, 5429, 8723, 12727, 15433, 18239, 22517, 26611, 59719, 70577, 124867, 200629, 292721, 776347, 1373537, 1623271, 17855981]

約数ペア:

[(1, 17855981), (11, 1623271), (13, 1373537), (23, 776347), (61, 292721), (89, 200629), (143, 124867), (253, 70577), (299, 59719), (671, 26611), (793, 22517), (979, 18239), (1157, 15433), (1403, 12727), (2047, 8723), (3289, 5429)]