640799998

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{99103}}^1$

素因数の和:99219

約数の個数: 16

約数和(自身を含む): 995400576

約数和(自身を除く): 354600578

約数列:

[1, 2, 53, 61, 106, 122, 3233, 6466, 99103, 198206, 5252459, 6045283, 10504918, 12090566, 320399999, 640799998]

約数ペア:

[(1, 640799998), (2, 320399999), (53, 12090566), (61, 10504918), (106, 6045283), (122, 5252459), (3233, 198206), (6466, 99103)]