21006820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{45667}}^1$

素因数の和:45699

約数の個数: 24

約数和(自身を含む): 46033344

約数和(自身を除く): 25026524

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 45667, 91334, 182668, 228335, 456670, 913340, 1050341, 2100682, 4201364, 5251705, 10503410, 21006820]

約数ペア:

[(1, 21006820), (2, 10503410), (4, 5251705), (5, 4201364), (10, 2100682), (20, 1050341), (23, 913340), (46, 456670), (92, 228335), (115, 182668), (230, 91334), (460, 45667)]