21221111

素因数分解:

${\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{293}}^1$

素因数の和:430

約数の個数: 16

約数和(自身を含む): 23030784

約数和(自身を除く): 1809673

約数列:

[1, 23, 47, 67, 293, 1081, 1541, 3149, 6739, 13771, 19631, 72427, 316733, 451513, 922657, 21221111]

約数ペア:

[(1, 21221111), (23, 922657), (47, 451513), (67, 316733), (293, 72427), (1081, 19631), (1541, 13771), (3149, 6739)]