21409072

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8209}}^1$

素因数の和:8380

約数の個数: 20

約数和(自身を含む): 41739640

約数和(自身を除く): 20330568

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8209, 16418, 32836, 65672, 131344, 1338067, 2676134, 5352268, 10704536, 21409072]

約数ペア:

[(1, 21409072), (2, 10704536), (4, 5352268), (8, 2676134), (16, 1338067), (163, 131344), (326, 65672), (652, 32836), (1304, 16418), (2608, 8209)]