213741780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{508909}}^1$

素因数の和:508928

約数の個数: 48

約数和(自身を含む): 683975040

約数和(自身を除く): 470233260

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, 508909, 1017818, 1526727, 2035636, 2544545, 3053454, 3562363, 5089090, 6106908, 7124726, 7633635, 10178180, 10687089, 14249452, 15267270, 17811815, 21374178, 30534540, 35623630, 42748356, 53435445, 71247260, 106870890, 213741780]

約数ペア:

[(1, 213741780), (2, 106870890), (3, 71247260), (4, 53435445), (5, 42748356), (6, 35623630), (7, 30534540), (10, 21374178), (12, 17811815), (14, 15267270), (15, 14249452), (20, 10687089), (21, 10178180), (28, 7633635), (30, 7124726), (35, 6106908), (42, 5089090), (60, 3562363), (70, 3053454), (84, 2544545), (105, 2035636), (140, 1526727), (210, 1017818), (420, 508909)]