256971520

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{15443}}^1$

素因数の和:15477

約数の個数: 72

約数和(自身を含む): 662918256

約数和(自身を除く): 405946736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 8320, 15443, 16640, 30886, 61772, 77215, 123544, 154430, 200759, 247088, 308860, 401518, 494176, 617720, 803036, 988352, 1003795, 1235440, 1606072, 1976704, 2007590, 2470880, 3212144, 3953408, 4015180, 4941760, 6424288, 8030360, 9883520, 12848576, 16060720, 19767040, 25697152, 32121440, 51394304, 64242880, 128485760, 256971520]

約数ペア:

[(1, 256971520), (2, 128485760), (4, 64242880), (5, 51394304), (8, 32121440), (10, 25697152), (13, 19767040), (16, 16060720), (20, 12848576), (26, 9883520), (32, 8030360), (40, 6424288), (52, 4941760), (64, 4015180), (65, 3953408), (80, 3212144), (104, 2470880), (128, 2007590), (130, 1976704), (160, 1606072), (208, 1235440), (256, 1003795), (260, 988352), (320, 803036), (416, 617720), (520, 494176), (640, 401518), (832, 308860), (1040, 247088), (1280, 200759), (1664, 154430), (2080, 123544), (3328, 77215), (4160, 61772), (8320, 30886), (15443, 16640)]