21143171

素因数分解:

$7^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1\times {\mathrm{241}}^1$

素因数の和:482

約数の個数: 16

約数和(自身を含む): 24718848

約数和(自身を除く): 3575677

約数列:

[1, 7, 83, 151, 241, 581, 1057, 1687, 12533, 20003, 36391, 87731, 140021, 254737, 3020453, 21143171]

約数ペア:

[(1, 21143171), (7, 3020453), (83, 254737), (151, 140021), (241, 87731), (581, 36391), (1057, 20003), (1687, 12533)]