19972045

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{1213}}^1$

素因数の和:1344

約数の個数: 16

約数和(自身を含む): 24911280

約数和(自身を除く): 4939235

約数列:

[1, 5, 37, 89, 185, 445, 1213, 3293, 6065, 16465, 44881, 107957, 224405, 539785, 3994409, 19972045]

約数ペア:

[(1, 19972045), (5, 3994409), (37, 539785), (89, 224405), (185, 107957), (445, 44881), (1213, 16465), (3293, 6065)]