256048305

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 457228800

約数和(自身を除く): 201180495

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 149, 255, 293, 345, 391, 447, 745, 879, 1173, 1465, 1955, 2235, 2533, 3427, 4395, 4981, 5865, 6739, 7599, 10281, 12665, 14943, 17135, 20217, 24905, 33695, 37995, 43657, 51405, 58259, 74715, 101085, 114563, 130971, 174777, 218285, 291295, 343689, 572815, 654855, 742169, 873885, 1004111, 1718445, 2226507, 3012333, 3710845, 5020555, 11132535, 15061665, 17069887, 51209661, 85349435, 256048305]

約数ペア:

[(1, 256048305), (3, 85349435), (5, 51209661), (15, 17069887), (17, 15061665), (23, 11132535), (51, 5020555), (69, 3710845), (85, 3012333), (115, 2226507), (149, 1718445), (255, 1004111), (293, 873885), (345, 742169), (391, 654855), (447, 572815), (745, 343689), (879, 291295), (1173, 218285), (1465, 174777), (1955, 130971), (2235, 114563), (2533, 101085), (3427, 74715), (4395, 58259), (4981, 51405), (5865, 43657), (6739, 37995), (7599, 33695), (10281, 24905), (12665, 20217), (14943, 17135)]