19772921

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{3391}}^1$

素因数の和:3429

約数の個数: 16

約数和(自身を含む): 24422400

約数和(自身を除く): 4649479

約数列:

[1, 7, 17, 49, 119, 343, 833, 3391, 5831, 23737, 57647, 166159, 403529, 1163113, 2824703, 19772921]

約数ペア:

[(1, 19772921), (7, 2824703), (17, 1163113), (49, 403529), (119, 166159), (343, 57647), (833, 23737), (3391, 5831)]