661424

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{617}}^1$

素因数の和:692

約数の個数: 20

約数和(自身を含む): 1302744

約数和(自身を除く): 641320

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 617, 1072, 1234, 2468, 4936, 9872, 41339, 82678, 165356, 330712, 661424]

約数ペア:

[(1, 661424), (2, 330712), (4, 165356), (8, 82678), (16, 41339), (67, 9872), (134, 4936), (268, 2468), (536, 1234), (617, 1072)]