290420991

素因数分解:

$3^3\times 7^2\times {\mathrm{219517}}^1$

素因数の和:219540

約数の個数: 24

約数和(自身を含む): 500501040

約数和(自身を除く): 210080049

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 219517, 658551, 1536619, 1975653, 4609857, 5926959, 10756333, 13829571, 32268999, 41488713, 96806997, 290420991]

約数ペア:

[(1, 290420991), (3, 96806997), (7, 41488713), (9, 32268999), (21, 13829571), (27, 10756333), (49, 5926959), (63, 4609857), (147, 1975653), (189, 1536619), (441, 658551), (1323, 219517)]