21155719

素因数分解:

${\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{227}}^1$

素因数の和:414

約数の個数: 16

約数和(自身を含む): 23442048

約数和(自身を除く): 2286329

約数列:

[1, 13, 67, 107, 227, 871, 1391, 2951, 7169, 15209, 24289, 93197, 197717, 315757, 1627363, 21155719]

約数ペア:

[(1, 21155719), (13, 1627363), (67, 315757), (107, 197717), (227, 93197), (871, 24289), (1391, 15209), (2951, 7169)]