2560380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{307}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 7244160

約数和(自身を除く): 4683780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 307, 417, 556, 614, 695, 834, 921, 1228, 1390, 1535, 1668, 1842, 2085, 2780, 3070, 3684, 4170, 4605, 6140, 8340, 9210, 18420, 42673, 85346, 128019, 170692, 213365, 256038, 426730, 512076, 640095, 853460, 1280190, 2560380]

約数ペア:

[(1, 2560380), (2, 1280190), (3, 853460), (4, 640095), (5, 512076), (6, 426730), (10, 256038), (12, 213365), (15, 170692), (20, 128019), (30, 85346), (60, 42673), (139, 18420), (278, 9210), (307, 8340), (417, 6140), (556, 4605), (614, 4170), (695, 3684), (834, 3070), (921, 2780), (1228, 2085), (1390, 1842), (1535, 1668)]