257908980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{929}}^1$

素因数の和:1609

約数の個数: 96

約数和(自身を含む): 827447040

約数和(自身を除く): 569538060

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, 661, 929, 1322, 1858, 1983, 2644, 2787, 3305, 3716, 3966, 4627, 4645, 5574, 6503, 6610, 7932, 9254, 9290, 9915, 11148, 13006, 13220, 13881, 13935, 18508, 18580, 19509, 19830, 23135, 26012, 27762, 27870, 32515, 39018, 39660, 46270, 55524, 55740, 65030, 69405, 78036, 92540, 97545, 130060, 138810, 195090, 277620, 390180, 614069, 1228138, 1842207, 2456276, 3070345, 3684414, 4298483, 6140690, 7368828, 8596966, 9211035, 12281380, 12895449, 17193932, 18422070, 21492415, 25790898, 36844140, 42984830, 51581796, 64477245, 85969660, 128954490, 257908980]

約数ペア:

[(1, 257908980), (2, 128954490), (3, 85969660), (4, 64477245), (5, 51581796), (6, 42984830), (7, 36844140), (10, 25790898), (12, 21492415), (14, 18422070), (15, 17193932), (20, 12895449), (21, 12281380), (28, 9211035), (30, 8596966), (35, 7368828), (42, 6140690), (60, 4298483), (70, 3684414), (84, 3070345), (105, 2456276), (140, 1842207), (210, 1228138), (420, 614069), (661, 390180), (929, 277620), (1322, 195090), (1858, 138810), (1983, 130060), (2644, 97545), (2787, 92540), (3305, 78036), (3716, 69405), (3966, 65030), (4627, 55740), (4645, 55524), (5574, 46270), (6503, 39660), (6610, 39018), (7932, 32515), (9254, 27870), (9290, 27762), (9915, 26012), (11148, 23135), (13006, 19830), (13220, 19509), (13881, 18580), (13935, 18508)]