20998320

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{431}}^1$

素因数の和:483

約数の個数: 160

約数和(自身を含む): 77137920

約数和(自身を除く): 56139600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 29, 30, 35, 40, 42, 48, 56, 58, 60, 70, 80, 84, 87, 105, 112, 116, 120, 140, 145, 168, 174, 203, 210, 232, 240, 280, 290, 336, 348, 406, 420, 431, 435, 464, 560, 580, 609, 696, 812, 840, 862, 870, 1015, 1160, 1218, 1293, 1392, 1624, 1680, 1724, 1740, 2030, 2155, 2320, 2436, 2586, 3017, 3045, 3248, 3448, 3480, 4060, 4310, 4872, 5172, 6034, 6090, 6465, 6896, 6960, 8120, 8620, 9051, 9744, 10344, 12068, 12180, 12499, 12930, 15085, 16240, 17240, 18102, 20688, 24136, 24360, 24998, 25860, 30170, 34480, 36204, 37497, 45255, 48272, 48720, 49996, 51720, 60340, 62495, 72408, 74994, 87493, 90510, 99992, 103440, 120680, 124990, 144816, 149988, 174986, 181020, 187485, 199984, 241360, 249980, 262479, 299976, 349972, 362040, 374970, 437465, 499960, 524958, 599952, 699944, 724080, 749940, 874930, 999920, 1049916, 1312395, 1399888, 1499880, 1749860, 2099832, 2624790, 2999760, 3499720, 4199664, 5249580, 6999440, 10499160, 20998320]

約数ペア:

[(1, 20998320), (2, 10499160), (3, 6999440), (4, 5249580), (5, 4199664), (6, 3499720), (7, 2999760), (8, 2624790), (10, 2099832), (12, 1749860), (14, 1499880), (15, 1399888), (16, 1312395), (20, 1049916), (21, 999920), (24, 874930), (28, 749940), (29, 724080), (30, 699944), (35, 599952), (40, 524958), (42, 499960), (48, 437465), (56, 374970), (58, 362040), (60, 349972), (70, 299976), (80, 262479), (84, 249980), (87, 241360), (105, 199984), (112, 187485), (116, 181020), (120, 174986), (140, 149988), (145, 144816), (168, 124990), (174, 120680), (203, 103440), (210, 99992), (232, 90510), (240, 87493), (280, 74994), (290, 72408), (336, 62495), (348, 60340), (406, 51720), (420, 49996), (431, 48720), (435, 48272), (464, 45255), (560, 37497), (580, 36204), (609, 34480), (696, 30170), (812, 25860), (840, 24998), (862, 24360), (870, 24136), (1015, 20688), (1160, 18102), (1218, 17240), (1293, 16240), (1392, 15085), (1624, 12930), (1680, 12499), (1724, 12180), (1740, 12068), (2030, 10344), (2155, 9744), (2320, 9051), (2436, 8620), (2586, 8120), (3017, 6960), (3045, 6896), (3248, 6465), (3448, 6090), (3480, 6034), (4060, 5172), (4310, 4872)]