21730813

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{907}}^1$

素因数の和:1036

約数の個数: 16

約数和(自身を含む): 24915520

約数和(自身を除く): 3184707

約数列:

[1, 13, 19, 97, 247, 907, 1261, 1843, 11791, 17233, 23959, 87979, 224029, 1143727, 1671601, 21730813]

約数ペア:

[(1, 21730813), (13, 1671601), (19, 1143727), (97, 224029), (247, 87979), (907, 23959), (1261, 17233), (1843, 11791)]