21715911

素因数分解:

$3^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1291}}^1$

素因数の和:1396

約数の個数: 32

約数和(自身を含む): 37209600

約数和(自身を除く): 15493689

約数列:

[1, 3, 7, 9, 21, 27, 63, 89, 189, 267, 623, 801, 1291, 1869, 2403, 3873, 5607, 9037, 11619, 16821, 27111, 34857, 81333, 114899, 243999, 344697, 804293, 1034091, 2412879, 3102273, 7238637, 21715911]

約数ペア:

[(1, 21715911), (3, 7238637), (7, 3102273), (9, 2412879), (21, 1034091), (27, 804293), (63, 344697), (89, 243999), (189, 114899), (267, 81333), (623, 34857), (801, 27111), (1291, 16821), (1869, 11619), (2403, 9037), (3873, 5607)]