20027290

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{251}}^1$

素因数の和:438

約数の個数: 32

約数和(自身を含む): 37013760

約数和(自身を除く): 16986470

約数列:

[1, 2, 5, 10, 79, 101, 158, 202, 251, 395, 502, 505, 790, 1010, 1255, 2510, 7979, 15958, 19829, 25351, 39658, 39895, 50702, 79790, 99145, 126755, 198290, 253510, 2002729, 4005458, 10013645, 20027290]

約数ペア:

[(1, 20027290), (2, 10013645), (5, 4005458), (10, 2002729), (79, 253510), (101, 198290), (158, 126755), (202, 99145), (251, 79790), (395, 50702), (502, 39895), (505, 39658), (790, 25351), (1010, 19829), (1255, 15958), (2510, 7979)]