16621521

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 26357760

約数和(自身を除く): 9736239

約数列:

[1, 3, 7, 21, 43, 79, 129, 233, 237, 301, 553, 699, 903, 1631, 1659, 3397, 4893, 10019, 10191, 18407, 23779, 30057, 55221, 70133, 71337, 128849, 210399, 386547, 791501, 2374503, 5540507, 16621521]

約数ペア:

[(1, 16621521), (3, 5540507), (7, 2374503), (21, 791501), (43, 386547), (79, 210399), (129, 128849), (233, 71337), (237, 70133), (301, 55221), (553, 30057), (699, 23779), (903, 18407), (1631, 10191), (1659, 10019), (3397, 4893)]