20915630

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{383}}^1$

素因数の和:560

約数の個数: 32

約数和(自身を含む): 38928384

約数和(自身を除く): 18012754

約数列:

[1, 2, 5, 10, 43, 86, 127, 215, 254, 383, 430, 635, 766, 1270, 1915, 3830, 5461, 10922, 16469, 27305, 32938, 48641, 54610, 82345, 97282, 164690, 243205, 486410, 2091563, 4183126, 10457815, 20915630]

約数ペア:

[(1, 20915630), (2, 10457815), (5, 4183126), (10, 2091563), (43, 486410), (86, 243205), (127, 164690), (215, 97282), (254, 82345), (383, 54610), (430, 48641), (635, 32938), (766, 27305), (1270, 16469), (1915, 10922), (3830, 5461)]