291231019

素因数分解:

${\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{337}}^1\times {\mathrm{457}}^1$

素因数の和:886

約数の個数: 16

約数和(自身を含む): 307131136

約数和(自身を除く): 15900117

約数列:

[1, 31, 61, 337, 457, 1891, 10447, 14167, 20557, 27877, 154009, 637267, 864187, 4774279, 9394549, 291231019]

約数ペア:

[(1, 291231019), (31, 9394549), (61, 4774279), (337, 864187), (457, 637267), (1891, 154009), (10447, 27877), (14167, 20557)]