640659795

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^2$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 1088812032

約数和(自身を除く): 448152237

約数列:

[1, 3, 5, 15, 31, 43, 93, 129, 155, 179, 215, 465, 537, 645, 895, 1333, 2685, 3999, 5549, 6665, 7697, 16647, 19995, 23091, 27745, 32041, 38485, 83235, 96123, 115455, 160205, 238607, 480615, 715821, 993271, 1193035, 1377763, 2979813, 3579105, 4133289, 4966355, 6888815, 14899065, 20666445, 42710653, 128131959, 213553265, 640659795]

約数ペア:

[(1, 640659795), (3, 213553265), (5, 128131959), (15, 42710653), (31, 20666445), (43, 14899065), (93, 6888815), (129, 4966355), (155, 4133289), (179, 3579105), (215, 2979813), (465, 1377763), (537, 1193035), (645, 993271), (895, 715821), (1333, 480615), (2685, 238607), (3999, 160205), (5549, 115455), (6665, 96123), (7697, 83235), (16647, 38485), (19995, 32041), (23091, 27745)]