647331321

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1381}}^1$

素因数の和:1522

約数の個数: 64

約数和(自身を含む): 1136733696

約数和(自身を除く): 489402375

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 101, 119, 221, 273, 303, 357, 663, 707, 1313, 1381, 1547, 1717, 2121, 3939, 4143, 4641, 5151, 9191, 9667, 12019, 17953, 22321, 23477, 27573, 29001, 36057, 53859, 66963, 70431, 125671, 139481, 156247, 164339, 305201, 377013, 418443, 468741, 493017, 915603, 976367, 1813253, 2136407, 2371177, 2929101, 5439759, 6409221, 7113531, 12692771, 16598239, 30825301, 38078313, 49794717, 92475903, 215777107, 647331321]

約数ペア:

[(1, 647331321), (3, 215777107), (7, 92475903), (13, 49794717), (17, 38078313), (21, 30825301), (39, 16598239), (51, 12692771), (91, 7113531), (101, 6409221), (119, 5439759), (221, 2929101), (273, 2371177), (303, 2136407), (357, 1813253), (663, 976367), (707, 915603), (1313, 493017), (1381, 468741), (1547, 418443), (1717, 377013), (2121, 305201), (3939, 164339), (4143, 156247), (4641, 139481), (5151, 125671), (9191, 70431), (9667, 66963), (12019, 53859), (17953, 36057), (22321, 29001), (23477, 27573)]