21047968

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{613}}^1$

素因数の和:689

約数の個数: 48

約数和(自身を含む): 44097480

約数和(自身を除く): 23049512

約数列:

[1, 2, 4, 8, 16, 29, 32, 37, 58, 74, 116, 148, 232, 296, 464, 592, 613, 928, 1073, 1184, 1226, 2146, 2452, 4292, 4904, 8584, 9808, 17168, 17777, 19616, 22681, 34336, 35554, 45362, 71108, 90724, 142216, 181448, 284432, 362896, 568864, 657749, 725792, 1315498, 2630996, 5261992, 10523984, 21047968]

約数ペア:

[(1, 21047968), (2, 10523984), (4, 5261992), (8, 2630996), (16, 1315498), (29, 725792), (32, 657749), (37, 568864), (58, 362896), (74, 284432), (116, 181448), (148, 142216), (232, 90724), (296, 71108), (464, 45362), (592, 35554), (613, 34336), (928, 22681), (1073, 19616), (1184, 17777), (1226, 17168), (2146, 9808), (2452, 8584), (4292, 4904)]