21821305

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{10723}}^1$

素因数の和:10776

約数の個数: 16

約数和(自身を含む): 29340864

約数和(自身を除く): 7519559

約数列:

[1, 5, 11, 37, 55, 185, 407, 2035, 10723, 53615, 117953, 396751, 589765, 1983755, 4364261, 21821305]

約数ペア:

[(1, 21821305), (5, 4364261), (11, 1983755), (37, 589765), (55, 396751), (185, 117953), (407, 53615), (2035, 10723)]