21197218

素因数分解:

$2^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{13399}}^1$

素因数の和:13521

約数の個数: 16

約数和(自身を含む): 36662400

約数和(自身を除く): 15465182

約数列:

[1, 2, 7, 14, 113, 226, 791, 1582, 13399, 26798, 93793, 187586, 1514087, 3028174, 10598609, 21197218]

約数ペア:

[(1, 21197218), (2, 10598609), (7, 3028174), (14, 1514087), (113, 187586), (226, 93793), (791, 26798), (1582, 13399)]