644040

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{1789}}^1$

素因数の和:1806

約数の個数: 48

約数和(自身を含む): 2094300

約数和(自身を除く): 1450260

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 1789, 3578, 5367, 7156, 8945, 10734, 14312, 16101, 17890, 21468, 26835, 32202, 35780, 42936, 53670, 64404, 71560, 80505, 107340, 128808, 161010, 214680, 322020, 644040]

約数ペア:

[(1, 644040), (2, 322020), (3, 214680), (4, 161010), (5, 128808), (6, 107340), (8, 80505), (9, 71560), (10, 64404), (12, 53670), (15, 42936), (18, 35780), (20, 32202), (24, 26835), (30, 21468), (36, 17890), (40, 16101), (45, 14312), (60, 10734), (72, 8945), (90, 7156), (120, 5367), (180, 3578), (360, 1789)]