21163667

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{1993}}^1$

素因数の和:2078

約数の個数: 16

約数和(自身を含む): 25459392

約数和(自身を除く): 4295725

約数列:

[1, 7, 37, 41, 259, 287, 1517, 1993, 10619, 13951, 73741, 81713, 516187, 571991, 3023381, 21163667]

約数ペア:

[(1, 21163667), (7, 3023381), (37, 571991), (41, 516187), (259, 81713), (287, 73741), (1517, 13951), (1993, 10619)]