21570129

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3847}}^1$

素因数の和:3949

約数の個数: 24

約数和(自身を含む): 36017280

約数和(自身を除く): 14447151

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 623, 801, 1869, 3847, 5607, 11541, 26929, 34623, 80787, 242361, 342383, 1027149, 2396681, 3081447, 7190043, 21570129]

約数ペア:

[(1, 21570129), (3, 7190043), (7, 3081447), (9, 2396681), (21, 1027149), (63, 342383), (89, 242361), (267, 80787), (623, 34623), (801, 26929), (1869, 11541), (3847, 5607)]