21868015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{3331}}^1$

素因数の和:3450

約数の個数: 16

約数和(自身を含む): 28548576

約数和(自身を除く): 6680561

約数列:

[1, 5, 13, 65, 101, 505, 1313, 3331, 6565, 16655, 43303, 216515, 336431, 1682155, 4373603, 21868015]

約数ペア:

[(1, 21868015), (5, 4373603), (13, 1682155), (65, 336431), (101, 216515), (505, 43303), (1313, 16655), (3331, 6565)]