20904480

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1613}}^1$

素因数の和:1640

約数の個数: 120

約数和(自身を含む): 73821132

約数和(自身を除く): 52916652

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1613, 1620, 2160, 2592, 3226, 3240, 4320, 4839, 6452, 6480, 8065, 9678, 12904, 12960, 14517, 16130, 19356, 24195, 25808, 29034, 32260, 38712, 43551, 48390, 51616, 58068, 64520, 72585, 77424, 87102, 96780, 116136, 129040, 130653, 145170, 154848, 174204, 193560, 217755, 232272, 258080, 261306, 290340, 348408, 387120, 435510, 464544, 522612, 580680, 653265, 696816, 774240, 871020, 1045224, 1161360, 1306530, 1393632, 1742040, 2090448, 2322720, 2613060, 3484080, 4180896, 5226120, 6968160, 10452240, 20904480]

約数ペア:

[(1, 20904480), (2, 10452240), (3, 6968160), (4, 5226120), (5, 4180896), (6, 3484080), (8, 2613060), (9, 2322720), (10, 2090448), (12, 1742040), (15, 1393632), (16, 1306530), (18, 1161360), (20, 1045224), (24, 871020), (27, 774240), (30, 696816), (32, 653265), (36, 580680), (40, 522612), (45, 464544), (48, 435510), (54, 387120), (60, 348408), (72, 290340), (80, 261306), (81, 258080), (90, 232272), (96, 217755), (108, 193560), (120, 174204), (135, 154848), (144, 145170), (160, 130653), (162, 129040), (180, 116136), (216, 96780), (240, 87102), (270, 77424), (288, 72585), (324, 64520), (360, 58068), (405, 51616), (432, 48390), (480, 43551), (540, 38712), (648, 32260), (720, 29034), (810, 25808), (864, 24195), (1080, 19356), (1296, 16130), (1440, 14517), (1613, 12960), (1620, 12904), (2160, 9678), (2592, 8065), (3226, 6480), (3240, 6452), (4320, 4839)]