18489040

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{967}}^1$

素因数の和:1219

約数の個数: 40

約数和(自身を含む): 43211520

約数和(自身を除く): 24722480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 967, 1195, 1912, 1934, 2390, 3824, 3868, 4780, 4835, 7736, 9560, 9670, 15472, 19120, 19340, 38680, 77360, 231113, 462226, 924452, 1155565, 1848904, 2311130, 3697808, 4622260, 9244520, 18489040]

約数ペア:

[(1, 18489040), (2, 9244520), (4, 4622260), (5, 3697808), (8, 2311130), (10, 1848904), (16, 1155565), (20, 924452), (40, 462226), (80, 231113), (239, 77360), (478, 38680), (956, 19340), (967, 19120), (1195, 15472), (1912, 9670), (1934, 9560), (2390, 7736), (3824, 4835), (3868, 4780)]