256780090

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{43}}^1\times {\mathrm{1741}}^1$

素因数の和:1812

約数の個数: 64

約数和(自身を含む): 551865600

約数和(自身を除く): 295085510

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 49, 70, 86, 98, 215, 245, 301, 343, 430, 490, 602, 686, 1505, 1715, 1741, 2107, 3010, 3430, 3482, 4214, 8705, 10535, 12187, 14749, 17410, 21070, 24374, 29498, 60935, 73745, 74863, 85309, 121870, 147490, 149726, 170618, 374315, 426545, 524041, 597163, 748630, 853090, 1048082, 1194326, 2620205, 2985815, 3668287, 5240410, 5971630, 7336574, 18341435, 25678009, 36682870, 51356018, 128390045, 256780090]

約数ペア:

[(1, 256780090), (2, 128390045), (5, 51356018), (7, 36682870), (10, 25678009), (14, 18341435), (35, 7336574), (43, 5971630), (49, 5240410), (70, 3668287), (86, 2985815), (98, 2620205), (215, 1194326), (245, 1048082), (301, 853090), (343, 748630), (430, 597163), (490, 524041), (602, 426545), (686, 374315), (1505, 170618), (1715, 149726), (1741, 147490), (2107, 121870), (3010, 85309), (3430, 74863), (3482, 73745), (4214, 60935), (8705, 29498), (10535, 24374), (12187, 21070), (14749, 17410)]