391340480

素因数分解:

$2^6\times 5^1\times {\mathrm{857}}^1\times {\mathrm{1427}}^1$

素因数の和:2301

約数の個数: 56

約数和(自身を含む): 933620688

約数和(自身を除く): 542280208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 857, 1427, 1714, 2854, 3428, 4285, 5708, 6856, 7135, 8570, 11416, 13712, 14270, 17140, 22832, 27424, 28540, 34280, 45664, 54848, 57080, 68560, 91328, 114160, 137120, 228320, 274240, 456640, 1222939, 2445878, 4891756, 6114695, 9783512, 12229390, 19567024, 24458780, 39134048, 48917560, 78268096, 97835120, 195670240, 391340480]

約数ペア:

[(1, 391340480), (2, 195670240), (4, 97835120), (5, 78268096), (8, 48917560), (10, 39134048), (16, 24458780), (20, 19567024), (32, 12229390), (40, 9783512), (64, 6114695), (80, 4891756), (160, 2445878), (320, 1222939), (857, 456640), (1427, 274240), (1714, 228320), (2854, 137120), (3428, 114160), (4285, 91328), (5708, 68560), (6856, 57080), (7135, 54848), (8570, 45664), (11416, 34280), (13712, 28540), (14270, 27424), (17140, 22832)]