640723968

素因数分解:

$2^{10}\times 3^2\times {\mathrm{37}}^1\times {\mathrm{1879}}^1$

素因数の和:1942

約数の個数: 132

約数和(自身を含む): 1901089840

約数和(自身を除く): 1260365872

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 37, 48, 64, 72, 74, 96, 111, 128, 144, 148, 192, 222, 256, 288, 296, 333, 384, 444, 512, 576, 592, 666, 768, 888, 1024, 1152, 1184, 1332, 1536, 1776, 1879, 2304, 2368, 2664, 3072, 3552, 3758, 4608, 4736, 5328, 5637, 7104, 7516, 9216, 9472, 10656, 11274, 14208, 15032, 16911, 18944, 21312, 22548, 28416, 30064, 33822, 37888, 42624, 45096, 56832, 60128, 67644, 69523, 85248, 90192, 113664, 120256, 135288, 139046, 170496, 180384, 208569, 240512, 270576, 278092, 340992, 360768, 417138, 481024, 541152, 556184, 625707, 721536, 834276, 962048, 1082304, 1112368, 1251414, 1443072, 1668552, 1924096, 2164608, 2224736, 2502828, 2886144, 3337104, 4329216, 4449472, 5005656, 5772288, 6674208, 8658432, 8898944, 10011312, 13348416, 17316864, 17797888, 20022624, 26696832, 35595776, 40045248, 53393664, 71191552, 80090496, 106787328, 160180992, 213574656, 320361984, 640723968]

約数ペア:

[(1, 640723968), (2, 320361984), (3, 213574656), (4, 160180992), (6, 106787328), (8, 80090496), (9, 71191552), (12, 53393664), (16, 40045248), (18, 35595776), (24, 26696832), (32, 20022624), (36, 17797888), (37, 17316864), (48, 13348416), (64, 10011312), (72, 8898944), (74, 8658432), (96, 6674208), (111, 5772288), (128, 5005656), (144, 4449472), (148, 4329216), (192, 3337104), (222, 2886144), (256, 2502828), (288, 2224736), (296, 2164608), (333, 1924096), (384, 1668552), (444, 1443072), (512, 1251414), (576, 1112368), (592, 1082304), (666, 962048), (768, 834276), (888, 721536), (1024, 625707), (1152, 556184), (1184, 541152), (1332, 481024), (1536, 417138), (1776, 360768), (1879, 340992), (2304, 278092), (2368, 270576), (2664, 240512), (3072, 208569), (3552, 180384), (3758, 170496), (4608, 139046), (4736, 135288), (5328, 120256), (5637, 113664), (7104, 90192), (7516, 85248), (9216, 69523), (9472, 67644), (10656, 60128), (11274, 56832), (14208, 45096), (15032, 42624), (16911, 37888), (18944, 33822), (21312, 30064), (22548, 28416)]