199944860

素因数分解:

$2^2\times 5^1\times {\mathrm{1307}}^1\times {\mathrm{7649}}^1$

素因数の和:8965

約数の個数: 24

約数和(自身を含む): 420260400

約数和(自身を除く): 220315540

約数列:

[1, 2, 4, 5, 10, 20, 1307, 2614, 5228, 6535, 7649, 13070, 15298, 26140, 30596, 38245, 76490, 152980, 9997243, 19994486, 39988972, 49986215, 99972430, 199944860]

約数ペア:

[(1, 199944860), (2, 99972430), (4, 49986215), (5, 39988972), (10, 19994486), (20, 9997243), (1307, 152980), (2614, 76490), (5228, 38245), (6535, 30596), (7649, 26140), (13070, 15298)]