20402123

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{631}}^1$

素因数の和:818

約数の個数: 16

約数和(自身を含む): 24268800

約数和(自身を除く): 3866677

約数列:

[1, 7, 31, 149, 217, 631, 1043, 4417, 4619, 19561, 32333, 94019, 136927, 658133, 2914589, 20402123]

約数ペア:

[(1, 20402123), (7, 2914589), (31, 658133), (149, 136927), (217, 94019), (631, 32333), (1043, 19561), (4417, 4619)]