20686821

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{1733}}^1$

素因数の和:1932

約数の個数: 16

約数和(自身を含む): 28964736

約数和(自身を除く): 8277915

約数列:

[1, 3, 23, 69, 173, 519, 1733, 3979, 5199, 11937, 39859, 119577, 299809, 899427, 6895607, 20686821]

約数ペア:

[(1, 20686821), (3, 6895607), (23, 899427), (69, 299809), (173, 119577), (519, 39859), (1733, 11937), (3979, 5199)]