20921254857

素因数分解:

$3^5\times {\mathrm{173}}^1\times {\mathrm{497663}}^1$

素因数の和:497851

約数の個数: 24

約数和(自身を含む): 31520047104

約数和(自身を除く): 10598792247

約数列:

[1, 3, 9, 27, 81, 173, 243, 519, 1557, 4671, 14013, 42039, 497663, 1492989, 4478967, 13436901, 40310703, 86095699, 120932109, 258287097, 774861291, 2324583873, 6973751619, 20921254857]

約数ペア:

[(1, 20921254857), (3, 6973751619), (9, 2324583873), (27, 774861291), (81, 258287097), (173, 120932109), (243, 86095699), (519, 40310703), (1557, 13436901), (4671, 4478967), (14013, 1492989), (42039, 497663)]