261239680

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1847}}^1$

素因数の和:1896

約数の個数: 128

約数和(自身を含む): 712514880

約数和(自身を除く): 451275200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 136, 160, 170, 208, 221, 260, 272, 320, 340, 416, 442, 520, 544, 640, 680, 832, 884, 1040, 1088, 1105, 1360, 1664, 1768, 1847, 2080, 2176, 2210, 2720, 3536, 3694, 4160, 4420, 5440, 7072, 7388, 8320, 8840, 9235, 10880, 14144, 14776, 17680, 18470, 24011, 28288, 29552, 31399, 35360, 36940, 48022, 59104, 62798, 70720, 73880, 96044, 118208, 120055, 125596, 141440, 147760, 156995, 192088, 236416, 240110, 251192, 295520, 313990, 384176, 408187, 480220, 502384, 591040, 627980, 768352, 816374, 960440, 1004768, 1182080, 1255960, 1536704, 1632748, 1920880, 2009536, 2040935, 2511920, 3073408, 3265496, 3841760, 4019072, 4081870, 5023840, 6530992, 7683520, 8163740, 10047680, 13061984, 15367040, 16327480, 20095360, 26123968, 32654960, 52247936, 65309920, 130619840, 261239680]

約数ペア:

[(1, 261239680), (2, 130619840), (4, 65309920), (5, 52247936), (8, 32654960), (10, 26123968), (13, 20095360), (16, 16327480), (17, 15367040), (20, 13061984), (26, 10047680), (32, 8163740), (34, 7683520), (40, 6530992), (52, 5023840), (64, 4081870), (65, 4019072), (68, 3841760), (80, 3265496), (85, 3073408), (104, 2511920), (128, 2040935), (130, 2009536), (136, 1920880), (160, 1632748), (170, 1536704), (208, 1255960), (221, 1182080), (260, 1004768), (272, 960440), (320, 816374), (340, 768352), (416, 627980), (442, 591040), (520, 502384), (544, 480220), (640, 408187), (680, 384176), (832, 313990), (884, 295520), (1040, 251192), (1088, 240110), (1105, 236416), (1360, 192088), (1664, 156995), (1768, 147760), (1847, 141440), (2080, 125596), (2176, 120055), (2210, 118208), (2720, 96044), (3536, 73880), (3694, 70720), (4160, 62798), (4420, 59104), (5440, 48022), (7072, 36940), (7388, 35360), (8320, 31399), (8840, 29552), (9235, 28288), (10880, 24011), (14144, 18470), (14776, 17680)]