72904420

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{13451}}^1$

素因数の和:13731

約数の個数: 24

約数和(自身を含む): 153675648

約数和(自身を除く): 80771228

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 5420, 13451, 26902, 53804, 67255, 134510, 269020, 3645221, 7290442, 14580884, 18226105, 36452210, 72904420]

約数ペア:

[(1, 72904420), (2, 36452210), (4, 18226105), (5, 14580884), (10, 7290442), (20, 3645221), (271, 269020), (542, 134510), (1084, 67255), (1355, 53804), (2710, 26902), (5420, 13451)]