164202780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{390959}}^1$

素因数の和:390978

約数の個数: 48

約数和(自身を含む): 525450240

約数和(自身を除く): 361247460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 390959, 781918, 1172877, 1563836, 1954795, 2345754, 2736713, 3909590, 4691508, 5473426, 5864385, 7819180, 8210139, 10946852, 11728770, 13683565, 16420278, 23457540, 27367130, 32840556, 41050695, 54734260, 82101390, 164202780]

約数ペア:

[(1, 164202780), (2, 82101390), (3, 54734260), (4, 41050695), (5, 32840556), (6, 27367130), (7, 23457540), (10, 16420278), (12, 13683565), (14, 11728770), (15, 10946852), (20, 8210139), (21, 7819180), (28, 5864385), (30, 5473426), (35, 4691508), (42, 3909590), (60, 2736713), (70, 2345754), (84, 1954795), (105, 1563836), (140, 1172877), (210, 781918), (420, 390959)]