13721320

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1103}}^1$

素因数の和:1425

約数の個数: 32

約数和(自身を含む): 31000320

約数和(自身を除く): 17279000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1103, 1244, 1555, 2206, 2488, 3110, 4412, 5515, 6220, 8824, 11030, 12440, 22060, 44120, 343033, 686066, 1372132, 1715165, 2744264, 3430330, 6860660, 13721320]

約数ペア:

[(1, 13721320), (2, 6860660), (4, 3430330), (5, 2744264), (8, 1715165), (10, 1372132), (20, 686066), (40, 343033), (311, 44120), (622, 22060), (1103, 12440), (1244, 11030), (1555, 8824), (2206, 6220), (2488, 5515), (3110, 4412)]