20931403

素因数分解:

${\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:171

約数の個数: 24

約数和(自身を含む): 24049152

約数和(自身を除く): 3117749

約数列:

[1, 17, 23, 47, 67, 289, 391, 799, 1081, 1139, 1541, 3149, 6647, 13583, 18377, 19363, 26197, 53533, 72427, 312409, 445349, 910061, 1231259, 20931403]

約数ペア:

[(1, 20931403), (17, 1231259), (23, 910061), (47, 445349), (67, 312409), (289, 72427), (391, 53533), (799, 26197), (1081, 19363), (1139, 18377), (1541, 13583), (3149, 6647)]