20880190

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{28603}}^1$

素因数の和:28683

約数の個数: 16

約数和(自身を含む): 38100528

約数和(自身を除く): 17220338

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 28603, 57206, 143015, 286030, 2088019, 4176038, 10440095, 20880190]

約数ペア:

[(1, 20880190), (2, 10440095), (5, 4176038), (10, 2088019), (73, 286030), (146, 143015), (365, 57206), (730, 28603)]