21902810

素因数分解:

$2^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{12101}}^1$

素因数の和:12289

約数の個数: 16

約数和(自身を含む): 39646152

約数和(自身を除く): 17743342

約数列:

[1, 2, 5, 10, 181, 362, 905, 1810, 12101, 24202, 60505, 121010, 2190281, 4380562, 10951405, 21902810]

約数ペア:

[(1, 21902810), (2, 10951405), (5, 4380562), (10, 2190281), (181, 121010), (362, 60505), (905, 24202), (1810, 12101)]