638647551

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1093}}^1$

素因数の和:1205

約数の個数: 64

約数和(自身を含む): 1071244800

約数和(自身を除く): 432597249

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 67, 153, 171, 201, 323, 459, 513, 603, 969, 1093, 1139, 1273, 1809, 2907, 3279, 3417, 3819, 8721, 9837, 10251, 11457, 18581, 20767, 21641, 29511, 30753, 34371, 55743, 62301, 64923, 73231, 167229, 186903, 194769, 219693, 353039, 501687, 560709, 584307, 659079, 1059117, 1244927, 1391389, 1977237, 3177351, 3734781, 4174167, 9532053, 11204343, 12522501, 23653613, 33613029, 37567503, 70960839, 212882517, 638647551]

約数ペア:

[(1, 638647551), (3, 212882517), (9, 70960839), (17, 37567503), (19, 33613029), (27, 23653613), (51, 12522501), (57, 11204343), (67, 9532053), (153, 4174167), (171, 3734781), (201, 3177351), (323, 1977237), (459, 1391389), (513, 1244927), (603, 1059117), (969, 659079), (1093, 584307), (1139, 560709), (1273, 501687), (1809, 353039), (2907, 219693), (3279, 194769), (3417, 186903), (3819, 167229), (8721, 73231), (9837, 64923), (10251, 62301), (11457, 55743), (18581, 34371), (20767, 30753), (21641, 29511)]