1397331040

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{178231}}^1$

素因数の和:178260

約数の個数: 72

約数和(自身を含む): 3840186672

約数和(自身を除く): 2442855632

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 178231, 356462, 712924, 891155, 1247617, 1425848, 1782310, 2495234, 2851696, 3564620, 4990468, 5703392, 6238085, 7129240, 8733319, 9980936, 12476170, 14258480, 17466638, 19961872, 24952340, 28516960, 34933276, 39923744, 43666595, 49904680, 69866552, 87333190, 99809360, 139733104, 174666380, 199618720, 279466208, 349332760, 698665520, 1397331040]

約数ペア:

[(1, 1397331040), (2, 698665520), (4, 349332760), (5, 279466208), (7, 199618720), (8, 174666380), (10, 139733104), (14, 99809360), (16, 87333190), (20, 69866552), (28, 49904680), (32, 43666595), (35, 39923744), (40, 34933276), (49, 28516960), (56, 24952340), (70, 19961872), (80, 17466638), (98, 14258480), (112, 12476170), (140, 9980936), (160, 8733319), (196, 7129240), (224, 6238085), (245, 5703392), (280, 4990468), (392, 3564620), (490, 2851696), (560, 2495234), (784, 1782310), (980, 1425848), (1120, 1247617), (1568, 891155), (1960, 712924), (3920, 356462), (7840, 178231)]