20671145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 28892160

約数和(自身を除く): 8221015

約数列:

[1, 5, 11, 19, 55, 95, 131, 151, 209, 655, 755, 1045, 1441, 1661, 2489, 2869, 7205, 8305, 12445, 14345, 19781, 27379, 31559, 98905, 136895, 157795, 217591, 375839, 1087955, 1879195, 4134229, 20671145]

約数ペア:

[(1, 20671145), (5, 4134229), (11, 1879195), (19, 1087955), (55, 375839), (95, 217591), (131, 157795), (151, 136895), (209, 98905), (655, 31559), (755, 27379), (1045, 19781), (1441, 14345), (1661, 12445), (2489, 8305), (2869, 7205)]