21491649

素因数分解:

$3^7\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 33377280

約数和(自身を除く): 11885631

約数列:

[1, 3, 9, 27, 31, 81, 93, 243, 279, 317, 729, 837, 951, 2187, 2511, 2853, 7533, 8559, 9827, 22599, 25677, 29481, 67797, 77031, 88443, 231093, 265329, 693279, 795987, 2387961, 7163883, 21491649]

約数ペア:

[(1, 21491649), (3, 7163883), (9, 2387961), (27, 795987), (31, 693279), (81, 265329), (93, 231093), (243, 88443), (279, 77031), (317, 67797), (729, 29481), (837, 25677), (951, 22599), (2187, 9827), (2511, 8559), (2853, 7533)]