21008360

素因数分解:

$2^3\times 5^1\times {\mathrm{525209}}^1$

素因数の和:525220

約数の個数: 16

約数和(自身を含む): 47268900

約数和(自身を除く): 26260540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 525209, 1050418, 2100836, 2626045, 4201672, 5252090, 10504180, 21008360]

約数ペア:

[(1, 21008360), (2, 10504180), (4, 5252090), (5, 4201672), (8, 2626045), (10, 2100836), (20, 1050418), (40, 525209)]