21711664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104383}}^1$

素因数の和:104404

約数の個数: 20

約数和(自身を含む): 45302656

約数和(自身を除く): 23590992

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104383, 208766, 417532, 835064, 1356979, 1670128, 2713958, 5427916, 10855832, 21711664]

約数ペア:

[(1, 21711664), (2, 10855832), (4, 5427916), (8, 2713958), (13, 1670128), (16, 1356979), (26, 835064), (52, 417532), (104, 208766), (208, 104383)]