20494880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{631}}^1$

素因数の和:682

約数の個数: 96

約数和(自身を含む): 57335040

約数和(自身を除く): 36840160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 160, 203, 224, 232, 280, 290, 406, 464, 560, 580, 631, 812, 928, 1015, 1120, 1160, 1262, 1624, 2030, 2320, 2524, 3155, 3248, 4060, 4417, 4640, 5048, 6310, 6496, 8120, 8834, 10096, 12620, 16240, 17668, 18299, 20192, 22085, 25240, 32480, 35336, 36598, 44170, 50480, 70672, 73196, 88340, 91495, 100960, 128093, 141344, 146392, 176680, 182990, 256186, 292784, 353360, 365980, 512372, 585568, 640465, 706720, 731960, 1024744, 1280930, 1463920, 2049488, 2561860, 2927840, 4098976, 5123720, 10247440, 20494880]

約数ペア:

[(1, 20494880), (2, 10247440), (4, 5123720), (5, 4098976), (7, 2927840), (8, 2561860), (10, 2049488), (14, 1463920), (16, 1280930), (20, 1024744), (28, 731960), (29, 706720), (32, 640465), (35, 585568), (40, 512372), (56, 365980), (58, 353360), (70, 292784), (80, 256186), (112, 182990), (116, 176680), (140, 146392), (145, 141344), (160, 128093), (203, 100960), (224, 91495), (232, 88340), (280, 73196), (290, 70672), (406, 50480), (464, 44170), (560, 36598), (580, 35336), (631, 32480), (812, 25240), (928, 22085), (1015, 20192), (1120, 18299), (1160, 17668), (1262, 16240), (1624, 12620), (2030, 10096), (2320, 8834), (2524, 8120), (3155, 6496), (3248, 6310), (4060, 5048), (4417, 4640)]