647440479

素因数分解:

$3^3\times 7^2\times {\mathrm{229}}^1\times {\mathrm{2137}}^1$

素因数の和:2389

約数の個数: 48

約数和(自身を含む): 1121167200

約数和(自身を除く): 473726721

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 229, 441, 687, 1323, 1603, 2061, 2137, 4809, 6183, 6411, 11221, 14427, 14959, 19233, 33663, 43281, 44877, 57699, 100989, 104713, 134631, 302967, 314139, 403893, 489373, 942417, 1468119, 2827251, 3425611, 4404357, 10276833, 13213071, 23979277, 30830499, 71937831, 92491497, 215813493, 647440479]

約数ペア:

[(1, 647440479), (3, 215813493), (7, 92491497), (9, 71937831), (21, 30830499), (27, 23979277), (49, 13213071), (63, 10276833), (147, 4404357), (189, 3425611), (229, 2827251), (441, 1468119), (687, 942417), (1323, 489373), (1603, 403893), (2061, 314139), (2137, 302967), (4809, 134631), (6183, 104713), (6411, 100989), (11221, 57699), (14427, 44877), (14959, 43281), (19233, 33663)]