19720378

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1\times {\mathrm{401}}^1$

素因数の和:837

約数の個数: 16

約数和(自身を含む): 30178944

約数和(自身を除く): 10458566

約数列:

[1, 2, 67, 134, 367, 401, 734, 802, 24589, 26867, 49178, 53734, 147167, 294334, 9860189, 19720378]

約数ペア:

[(1, 19720378), (2, 9860189), (67, 294334), (134, 147167), (367, 53734), (401, 49178), (734, 26867), (802, 24589)]