21791760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:177

約数の個数: 160

約数和(自身を含む): 72852480

約数和(自身を除く): 51060720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 29, 30, 31, 40, 48, 58, 60, 62, 80, 87, 93, 101, 116, 120, 124, 145, 155, 174, 186, 202, 232, 240, 248, 290, 303, 310, 348, 372, 404, 435, 464, 465, 496, 505, 580, 606, 620, 696, 744, 808, 870, 899, 930, 1010, 1160, 1212, 1240, 1392, 1488, 1515, 1616, 1740, 1798, 1860, 2020, 2320, 2424, 2480, 2697, 2929, 3030, 3131, 3480, 3596, 3720, 4040, 4495, 4848, 5394, 5858, 6060, 6262, 6960, 7192, 7440, 8080, 8787, 8990, 9393, 10788, 11716, 12120, 12524, 13485, 14384, 14645, 15655, 17574, 17980, 18786, 21576, 23432, 24240, 25048, 26970, 29290, 31310, 35148, 35960, 37572, 43152, 43935, 46864, 46965, 50096, 53940, 58580, 62620, 70296, 71920, 75144, 87870, 90799, 93930, 107880, 117160, 125240, 140592, 150288, 175740, 181598, 187860, 215760, 234320, 250480, 272397, 351480, 363196, 375720, 453995, 544794, 702960, 726392, 751440, 907990, 1089588, 1361985, 1452784, 1815980, 2179176, 2723970, 3631960, 4358352, 5447940, 7263920, 10895880, 21791760]

約数ペア:

[(1, 21791760), (2, 10895880), (3, 7263920), (4, 5447940), (5, 4358352), (6, 3631960), (8, 2723970), (10, 2179176), (12, 1815980), (15, 1452784), (16, 1361985), (20, 1089588), (24, 907990), (29, 751440), (30, 726392), (31, 702960), (40, 544794), (48, 453995), (58, 375720), (60, 363196), (62, 351480), (80, 272397), (87, 250480), (93, 234320), (101, 215760), (116, 187860), (120, 181598), (124, 175740), (145, 150288), (155, 140592), (174, 125240), (186, 117160), (202, 107880), (232, 93930), (240, 90799), (248, 87870), (290, 75144), (303, 71920), (310, 70296), (348, 62620), (372, 58580), (404, 53940), (435, 50096), (464, 46965), (465, 46864), (496, 43935), (505, 43152), (580, 37572), (606, 35960), (620, 35148), (696, 31310), (744, 29290), (808, 26970), (870, 25048), (899, 24240), (930, 23432), (1010, 21576), (1160, 18786), (1212, 17980), (1240, 17574), (1392, 15655), (1488, 14645), (1515, 14384), (1616, 13485), (1740, 12524), (1798, 12120), (1860, 11716), (2020, 10788), (2320, 9393), (2424, 8990), (2480, 8787), (2697, 8080), (2929, 7440), (3030, 7192), (3131, 6960), (3480, 6262), (3596, 6060), (3720, 5858), (4040, 5394), (4495, 4848)]