12399840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:209

約数の個数: 144

約数和(自身を含む): 43243200

約数和(自身を除く): 30843360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 79, 80, 90, 96, 109, 120, 144, 158, 160, 180, 218, 237, 240, 288, 316, 327, 360, 395, 436, 474, 480, 545, 632, 654, 711, 720, 790, 872, 948, 981, 1090, 1185, 1264, 1308, 1422, 1440, 1580, 1635, 1744, 1896, 1962, 2180, 2370, 2528, 2616, 2844, 3160, 3270, 3488, 3555, 3792, 3924, 4360, 4740, 4905, 5232, 5688, 6320, 6540, 7110, 7584, 7848, 8611, 8720, 9480, 9810, 10464, 11376, 12640, 13080, 14220, 15696, 17222, 17440, 18960, 19620, 22752, 25833, 26160, 28440, 31392, 34444, 37920, 39240, 43055, 51666, 52320, 56880, 68888, 77499, 78480, 86110, 103332, 113760, 129165, 137776, 154998, 156960, 172220, 206664, 258330, 275552, 309996, 344440, 387495, 413328, 516660, 619992, 688880, 774990, 826656, 1033320, 1239984, 1377760, 1549980, 2066640, 2479968, 3099960, 4133280, 6199920, 12399840]

約数ペア:

[(1, 12399840), (2, 6199920), (3, 4133280), (4, 3099960), (5, 2479968), (6, 2066640), (8, 1549980), (9, 1377760), (10, 1239984), (12, 1033320), (15, 826656), (16, 774990), (18, 688880), (20, 619992), (24, 516660), (30, 413328), (32, 387495), (36, 344440), (40, 309996), (45, 275552), (48, 258330), (60, 206664), (72, 172220), (79, 156960), (80, 154998), (90, 137776), (96, 129165), (109, 113760), (120, 103332), (144, 86110), (158, 78480), (160, 77499), (180, 68888), (218, 56880), (237, 52320), (240, 51666), (288, 43055), (316, 39240), (327, 37920), (360, 34444), (395, 31392), (436, 28440), (474, 26160), (480, 25833), (545, 22752), (632, 19620), (654, 18960), (711, 17440), (720, 17222), (790, 15696), (872, 14220), (948, 13080), (981, 12640), (1090, 11376), (1185, 10464), (1264, 9810), (1308, 9480), (1422, 8720), (1440, 8611), (1580, 7848), (1635, 7584), (1744, 7110), (1896, 6540), (1962, 6320), (2180, 5688), (2370, 5232), (2528, 4905), (2616, 4740), (2844, 4360), (3160, 3924), (3270, 3792), (3488, 3555)]