21304005

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13789}}^1$

素因数の和:13900

約数の個数: 16

約数和(自身を含む): 34419840

約数和(自身を除く): 13115835

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 13789, 41367, 68945, 206835, 1420267, 4260801, 7101335, 21304005]

約数ペア:

[(1, 21304005), (3, 7101335), (5, 4260801), (15, 1420267), (103, 206835), (309, 68945), (515, 41367), (1545, 13789)]