21902913

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{5167}}^1$

素因数の和:5333

約数の個数: 16

約数和(自身を含む): 32661760

約数和(自身を除く): 10758847

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 5167, 15501, 46503, 139509, 811219, 2433657, 7300971, 21902913]

約数ペア:

[(1, 21902913), (3, 7300971), (9, 2433657), (27, 811219), (157, 139509), (471, 46503), (1413, 15501), (4239, 5167)]