686999740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{24659}}^1$

素因数の和:24874

約数の個数: 48

約数和(自身を含む): 1657152000

約数和(自身を除く): 970152260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1393, 1990, 2786, 3980, 5572, 6965, 13930, 24659, 27860, 49318, 98636, 123295, 172613, 246590, 345226, 493180, 690452, 863065, 1726130, 3452260, 4907141, 9814282, 19628564, 24535705, 34349987, 49071410, 68699974, 98142820, 137399948, 171749935, 343499870, 686999740]

約数ペア:

[(1, 686999740), (2, 343499870), (4, 171749935), (5, 137399948), (7, 98142820), (10, 68699974), (14, 49071410), (20, 34349987), (28, 24535705), (35, 19628564), (70, 9814282), (140, 4907141), (199, 3452260), (398, 1726130), (796, 863065), (995, 690452), (1393, 493180), (1990, 345226), (2786, 246590), (3980, 172613), (5572, 123295), (6965, 98636), (13930, 49318), (24659, 27860)]