20891806

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^2\times {\mathrm{179}}^1$

素因数の和:328

約数の個数: 24

約数和(自身を含む): 34450920

約数和(自身を除く): 13559114

約数列:

[1, 2, 13, 26, 67, 134, 179, 358, 871, 1742, 2327, 4489, 4654, 8978, 11993, 23986, 58357, 116714, 155909, 311818, 803531, 1607062, 10445903, 20891806]

約数ペア:

[(1, 20891806), (2, 10445903), (13, 1607062), (26, 803531), (67, 311818), (134, 155909), (179, 116714), (358, 58357), (871, 23986), (1742, 11993), (2327, 8978), (4489, 4654)]