20981304

素因数分解:

$2^3\times 3^2\times {\mathrm{311}}^1\times {\mathrm{937}}^1$

素因数の和:1260

約数の個数: 48

約数和(自身を含む): 57067920

約数和(自身を除く): 36086616

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 311, 622, 933, 937, 1244, 1866, 1874, 2488, 2799, 2811, 3732, 3748, 5598, 5622, 7464, 7496, 8433, 11196, 11244, 16866, 22392, 22488, 33732, 67464, 291407, 582814, 874221, 1165628, 1748442, 2331256, 2622663, 3496884, 5245326, 6993768, 10490652, 20981304]

約数ペア:

[(1, 20981304), (2, 10490652), (3, 6993768), (4, 5245326), (6, 3496884), (8, 2622663), (9, 2331256), (12, 1748442), (18, 1165628), (24, 874221), (36, 582814), (72, 291407), (311, 67464), (622, 33732), (933, 22488), (937, 22392), (1244, 16866), (1866, 11244), (1874, 11196), (2488, 8433), (2799, 7496), (2811, 7464), (3732, 5622), (3748, 5598)]