20735540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4003}}^1$

素因数の和:4056

約数の個数: 48

約数和(自身を含む): 51123072

約数和(自身を除く): 30387532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 4003, 5180, 8006, 16012, 20015, 28021, 40030, 56042, 80060, 112084, 140105, 148111, 280210, 296222, 560420, 592444, 740555, 1036777, 1481110, 2073554, 2962220, 4147108, 5183885, 10367770, 20735540]

約数ペア:

[(1, 20735540), (2, 10367770), (4, 5183885), (5, 4147108), (7, 2962220), (10, 2073554), (14, 1481110), (20, 1036777), (28, 740555), (35, 592444), (37, 560420), (70, 296222), (74, 280210), (140, 148111), (148, 140105), (185, 112084), (259, 80060), (370, 56042), (518, 40030), (740, 28021), (1036, 20015), (1295, 16012), (2590, 8006), (4003, 5180)]