1918420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 4693248

約数和(自身を除く): 2774828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 193, 284, 355, 386, 497, 710, 772, 965, 994, 1351, 1420, 1930, 1988, 2485, 2702, 3860, 4970, 5404, 6755, 9940, 13510, 13703, 27020, 27406, 54812, 68515, 95921, 137030, 191842, 274060, 383684, 479605, 959210, 1918420]

約数ペア:

[(1, 1918420), (2, 959210), (4, 479605), (5, 383684), (7, 274060), (10, 191842), (14, 137030), (20, 95921), (28, 68515), (35, 54812), (70, 27406), (71, 27020), (140, 13703), (142, 13510), (193, 9940), (284, 6755), (355, 5404), (386, 4970), (497, 3860), (710, 2702), (772, 2485), (965, 1988), (994, 1930), (1351, 1420)]