21894704

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105263}}^1$

素因数の和:105284

約数の個数: 20

約数和(自身を含む): 45684576

約数和(自身を除く): 23789872

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105263, 210526, 421052, 842104, 1368419, 1684208, 2736838, 5473676, 10947352, 21894704]

約数ペア:

[(1, 21894704), (2, 10947352), (4, 5473676), (8, 2736838), (13, 1684208), (16, 1368419), (26, 842104), (52, 421052), (104, 210526), (208, 105263)]