21940220

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{13217}}^1$

素因数の和:13309

約数の個数: 24

約数和(自身を含む): 46633104

約数和(自身を除く): 24692884

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 13217, 26434, 52868, 66085, 132170, 264340, 1097011, 2194022, 4388044, 5485055, 10970110, 21940220]

約数ペア:

[(1, 21940220), (2, 10970110), (4, 5485055), (5, 4388044), (10, 2194022), (20, 1097011), (83, 264340), (166, 132170), (332, 66085), (415, 52868), (830, 26434), (1660, 13217)]