19997425

素因数分解:

$5^2\times 7^1\times {\mathrm{229}}^1\times {\mathrm{499}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 28520000

約数和(自身を除く): 8522575

約数列:

[1, 5, 7, 25, 35, 175, 229, 499, 1145, 1603, 2495, 3493, 5725, 8015, 12475, 17465, 40075, 87325, 114271, 571355, 799897, 2856775, 3999485, 19997425]

約数ペア:

[(1, 19997425), (5, 3999485), (7, 2856775), (25, 799897), (35, 571355), (175, 114271), (229, 87325), (499, 40075), (1145, 17465), (1603, 12475), (2495, 8015), (3493, 5725)]