72620420

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{5647}}^1$

素因数の和:6299

約数の個数: 24

約数和(自身を含む): 152767104

約数和(自身を除く): 80146684

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2572, 3215, 5647, 6430, 11294, 12860, 22588, 28235, 56470, 112940, 3631021, 7262042, 14524084, 18155105, 36310210, 72620420]

約数ペア:

[(1, 72620420), (2, 36310210), (4, 18155105), (5, 14524084), (10, 7262042), (20, 3631021), (643, 112940), (1286, 56470), (2572, 28235), (3215, 22588), (5647, 12860), (6430, 11294)]