21081751

素因数分解:

${\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:390

約数の個数: 16

約数和(自身を含む): 23030784

約数和(自身を除く): 1949033

約数列:

[1, 17, 67, 83, 223, 1139, 1411, 3791, 5561, 14941, 18509, 94537, 253997, 314653, 1240103, 21081751]

約数ペア:

[(1, 21081751), (17, 1240103), (67, 314653), (83, 253997), (223, 94537), (1139, 18509), (1411, 14941), (3791, 5561)]