640750737

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{269}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 1026432000

約数和(自身を除く): 385681263

約数列:

[1, 3, 11, 19, 29, 33, 57, 87, 131, 209, 269, 319, 393, 551, 627, 807, 957, 1441, 1653, 2489, 2959, 3799, 4323, 5111, 6061, 7467, 7801, 8877, 11397, 15333, 18183, 23403, 27379, 35239, 41789, 56221, 72181, 82137, 85811, 105717, 125367, 148219, 168663, 216543, 257433, 387629, 444657, 669541, 793991, 1021931, 1162887, 1630409, 2008623, 2381973, 3065793, 4891227, 7364951, 11241241, 19416689, 22094853, 33723723, 58250067, 213583579, 640750737]

約数ペア:

[(1, 640750737), (3, 213583579), (11, 58250067), (19, 33723723), (29, 22094853), (33, 19416689), (57, 11241241), (87, 7364951), (131, 4891227), (209, 3065793), (269, 2381973), (319, 2008623), (393, 1630409), (551, 1162887), (627, 1021931), (807, 793991), (957, 669541), (1441, 444657), (1653, 387629), (2489, 257433), (2959, 216543), (3799, 168663), (4323, 148219), (5111, 125367), (6061, 105717), (7467, 85811), (7801, 82137), (8877, 72181), (11397, 56221), (15333, 41789), (18183, 35239), (23403, 27379)]