620937981

素因数分解:

$3^4\times {\mathrm{149}}^1\times {\mathrm{51449}}^1$

素因数の和:51610

約数の個数: 20

約数和(自身を含む): 933817500

約数和(自身を除く): 312879519

約数列:

[1, 3, 9, 27, 81, 149, 447, 1341, 4023, 12069, 51449, 154347, 463041, 1389123, 4167369, 7665901, 22997703, 68993109, 206979327, 620937981]

約数ペア:

[(1, 620937981), (3, 206979327), (9, 68993109), (27, 22997703), (81, 7665901), (149, 4167369), (447, 1389123), (1341, 463041), (4023, 154347), (12069, 51449)]