81668394

素因数分解:

$2^1\times 3^2\times {\mathrm{211}}^1\times {\mathrm{21503}}^1$

素因数の和:21722

約数の個数: 24

約数和(自身を含む): 177795072

約数和(自身を除く): 96126678

約数列:

[1, 2, 3, 6, 9, 18, 211, 422, 633, 1266, 1899, 3798, 21503, 43006, 64509, 129018, 193527, 387054, 4537133, 9074266, 13611399, 27222798, 40834197, 81668394]

約数ペア:

[(1, 81668394), (2, 40834197), (3, 27222798), (6, 13611399), (9, 9074266), (18, 4537133), (211, 387054), (422, 193527), (633, 129018), (1266, 64509), (1899, 43006), (3798, 21503)]