21191793

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 33503232

約数和(自身を除く): 12311439

約数列:

[1, 3, 7, 21, 41, 123, 151, 163, 287, 453, 489, 861, 1057, 1141, 3171, 3423, 6191, 6683, 18573, 20049, 24613, 43337, 46781, 73839, 130011, 140343, 172291, 516873, 1009133, 3027399, 7063931, 21191793]

約数ペア:

[(1, 21191793), (3, 7063931), (7, 3027399), (21, 1009133), (41, 516873), (123, 172291), (151, 140343), (163, 130011), (287, 73839), (453, 46781), (489, 43337), (861, 24613), (1057, 20049), (1141, 18573), (3171, 6683), (3423, 6191)]