639578240

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{367}}^1\times {\mathrm{389}}^1$

素因数の和:782

約数の個数: 128

約数和(自身を含む): 1756684800

約数和(自身を除く): 1117106560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 367, 389, 448, 560, 640, 734, 778, 896, 1120, 1468, 1556, 1835, 1945, 2240, 2569, 2723, 2936, 3112, 3670, 3890, 4480, 5138, 5446, 5872, 6224, 7340, 7780, 10276, 10892, 11744, 12448, 12845, 13615, 14680, 15560, 20552, 21784, 23488, 24896, 25690, 27230, 29360, 31120, 41104, 43568, 46976, 49792, 51380, 54460, 58720, 62240, 82208, 87136, 102760, 108920, 117440, 124480, 142763, 164416, 174272, 205520, 217840, 234880, 248960, 285526, 328832, 348544, 411040, 435680, 571052, 713815, 822080, 871360, 999341, 1142104, 1427630, 1644160, 1742720, 1998682, 2284208, 2855260, 3997364, 4568416, 4996705, 5710520, 7994728, 9136832, 9993410, 11421040, 15989456, 18273664, 19986820, 22842080, 31978912, 39973640, 45684160, 63957824, 79947280, 91368320, 127915648, 159894560, 319789120, 639578240]

約数ペア:

[(1, 639578240), (2, 319789120), (4, 159894560), (5, 127915648), (7, 91368320), (8, 79947280), (10, 63957824), (14, 45684160), (16, 39973640), (20, 31978912), (28, 22842080), (32, 19986820), (35, 18273664), (40, 15989456), (56, 11421040), (64, 9993410), (70, 9136832), (80, 7994728), (112, 5710520), (128, 4996705), (140, 4568416), (160, 3997364), (224, 2855260), (280, 2284208), (320, 1998682), (367, 1742720), (389, 1644160), (448, 1427630), (560, 1142104), (640, 999341), (734, 871360), (778, 822080), (896, 713815), (1120, 571052), (1468, 435680), (1556, 411040), (1835, 348544), (1945, 328832), (2240, 285526), (2569, 248960), (2723, 234880), (2936, 217840), (3112, 205520), (3670, 174272), (3890, 164416), (4480, 142763), (5138, 124480), (5446, 117440), (5872, 108920), (6224, 102760), (7340, 87136), (7780, 82208), (10276, 62240), (10892, 58720), (11744, 54460), (12448, 51380), (12845, 49792), (13615, 46976), (14680, 43568), (15560, 41104), (20552, 31120), (21784, 29360), (23488, 27230), (24896, 25690)]