20655432640

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{881}}^1\times {\mathrm{1787}}^1$

素因数の和:2726

約数の個数: 112

約数和(自身を含む): 50470820064

約数和(自身を除く): 29815387424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 881, 1312, 1640, 1762, 1787, 2624, 3280, 3524, 3574, 4405, 6560, 7048, 7148, 8810, 8935, 13120, 14096, 14296, 17620, 17870, 28192, 28592, 35240, 35740, 36121, 56384, 57184, 70480, 71480, 72242, 73267, 114368, 140960, 142960, 144484, 146534, 180605, 281920, 285920, 288968, 293068, 361210, 366335, 571840, 577936, 586136, 722420, 732670, 1155872, 1172272, 1444840, 1465340, 1574347, 2311744, 2344544, 2889680, 2930680, 3148694, 4689088, 5779360, 5861360, 6297388, 7871735, 11558720, 11722720, 12594776, 15743470, 23445440, 25189552, 31486940, 50379104, 62973880, 64548227, 100758208, 125947760, 129096454, 251895520, 258192908, 322741135, 503791040, 516385816, 645482270, 1032771632, 1290964540, 2065543264, 2581929080, 4131086528, 5163858160, 10327716320, 20655432640]

約数ペア:

[(1, 20655432640), (2, 10327716320), (4, 5163858160), (5, 4131086528), (8, 2581929080), (10, 2065543264), (16, 1290964540), (20, 1032771632), (32, 645482270), (40, 516385816), (41, 503791040), (64, 322741135), (80, 258192908), (82, 251895520), (160, 129096454), (164, 125947760), (205, 100758208), (320, 64548227), (328, 62973880), (410, 50379104), (656, 31486940), (820, 25189552), (881, 23445440), (1312, 15743470), (1640, 12594776), (1762, 11722720), (1787, 11558720), (2624, 7871735), (3280, 6297388), (3524, 5861360), (3574, 5779360), (4405, 4689088), (6560, 3148694), (7048, 2930680), (7148, 2889680), (8810, 2344544), (8935, 2311744), (13120, 1574347), (14096, 1465340), (14296, 1444840), (17620, 1172272), (17870, 1155872), (28192, 732670), (28592, 722420), (35240, 586136), (35740, 577936), (36121, 571840), (56384, 366335), (57184, 361210), (70480, 293068), (71480, 288968), (72242, 285920), (73267, 281920), (114368, 180605), (140960, 146534), (142960, 144484)]