18921529

素因数分解:

${\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:408

約数の個数: 16

約数和(自身を含む): 21230784

約数和(自身を除く): 2309255

約数列:

[1, 11, 61, 163, 173, 671, 1793, 1903, 9943, 10553, 28199, 109373, 116083, 310189, 1720139, 18921529]

約数ペア:

[(1, 18921529), (11, 1720139), (61, 310189), (163, 116083), (173, 109373), (671, 28199), (1793, 10553), (1903, 9943)]