20867040

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:401

約数の個数: 144

約数和(自身を含む): 73081008

約数和(自身を除く): 52213968

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 43, 45, 48, 60, 72, 80, 86, 90, 96, 120, 129, 144, 160, 172, 180, 215, 240, 258, 288, 337, 344, 360, 387, 430, 480, 516, 645, 674, 688, 720, 774, 860, 1011, 1032, 1290, 1348, 1376, 1440, 1548, 1685, 1720, 1935, 2022, 2064, 2580, 2696, 3033, 3096, 3370, 3440, 3870, 4044, 4128, 5055, 5160, 5392, 6066, 6192, 6740, 6880, 7740, 8088, 10110, 10320, 10784, 12132, 12384, 13480, 14491, 15165, 15480, 16176, 20220, 20640, 24264, 26960, 28982, 30330, 30960, 32352, 40440, 43473, 48528, 53920, 57964, 60660, 61920, 72455, 80880, 86946, 97056, 115928, 121320, 130419, 144910, 161760, 173892, 217365, 231856, 242640, 260838, 289820, 347784, 434730, 463712, 485280, 521676, 579640, 652095, 695568, 869460, 1043352, 1159280, 1304190, 1391136, 1738920, 2086704, 2318560, 2608380, 3477840, 4173408, 5216760, 6955680, 10433520, 20867040]

約数ペア:

[(1, 20867040), (2, 10433520), (3, 6955680), (4, 5216760), (5, 4173408), (6, 3477840), (8, 2608380), (9, 2318560), (10, 2086704), (12, 1738920), (15, 1391136), (16, 1304190), (18, 1159280), (20, 1043352), (24, 869460), (30, 695568), (32, 652095), (36, 579640), (40, 521676), (43, 485280), (45, 463712), (48, 434730), (60, 347784), (72, 289820), (80, 260838), (86, 242640), (90, 231856), (96, 217365), (120, 173892), (129, 161760), (144, 144910), (160, 130419), (172, 121320), (180, 115928), (215, 97056), (240, 86946), (258, 80880), (288, 72455), (337, 61920), (344, 60660), (360, 57964), (387, 53920), (430, 48528), (480, 43473), (516, 40440), (645, 32352), (674, 30960), (688, 30330), (720, 28982), (774, 26960), (860, 24264), (1011, 20640), (1032, 20220), (1290, 16176), (1348, 15480), (1376, 15165), (1440, 14491), (1548, 13480), (1685, 12384), (1720, 12132), (1935, 10784), (2022, 10320), (2064, 10110), (2580, 8088), (2696, 7740), (3033, 6880), (3096, 6740), (3370, 6192), (3440, 6066), (3870, 5392), (4044, 5160), (4128, 5055)]