21147693

素因数分解:

$3^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{5821}}^1$

素因数の和:6004

約数の個数: 16

約数和(自身を含む): 32416896

約数和(自身を除く): 11269203

約数列:

[1, 3, 7, 21, 173, 519, 1211, 3633, 5821, 17463, 40747, 122241, 1007033, 3021099, 7049231, 21147693]

約数ペア:

[(1, 21147693), (3, 7049231), (7, 3021099), (21, 1007033), (173, 122241), (519, 40747), (1211, 17463), (3633, 5821)]