639287919

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{1021}}^1\times {\mathrm{2399}}^1$

素因数の和:3455

約数の個数: 24

約数和(自身を含む): 956592000

約数和(自身を除く): 317304081

約数列:

[1, 3, 9, 29, 87, 261, 1021, 2399, 3063, 7197, 9189, 21591, 29609, 69571, 88827, 208713, 266481, 626139, 2449379, 7348137, 22044411, 71031991, 213095973, 639287919]

約数ペア:

[(1, 639287919), (3, 213095973), (9, 71031991), (29, 22044411), (87, 7348137), (261, 2449379), (1021, 626139), (2399, 266481), (3063, 208713), (7197, 88827), (9189, 69571), (21591, 29609)]