21981898

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{607}}^1\times {\mathrm{953}}^1$

素因数の和:1581

約数の個数: 16

約数和(自身を含む): 34801920

約数和(自身を除く): 12820022

約数列:

[1, 2, 19, 38, 607, 953, 1214, 1906, 11533, 18107, 23066, 36214, 578471, 1156942, 10990949, 21981898]

約数ペア:

[(1, 21981898), (2, 10990949), (19, 1156942), (38, 578471), (607, 36214), (953, 23066), (1214, 18107), (1906, 11533)]