21277778

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{607}}^1\times {\mathrm{1031}}^1$

素因数の和:1657

約数の個数: 16

約数和(自身を含む): 33882624

約数和(自身を除く): 12604846

約数列:

[1, 2, 17, 34, 607, 1031, 1214, 2062, 10319, 17527, 20638, 35054, 625817, 1251634, 10638889, 21277778]

約数ペア:

[(1, 21277778), (2, 10638889), (17, 1251634), (34, 625817), (607, 35054), (1031, 20638), (1214, 17527), (2062, 10319)]