257533080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{306587}}^1$

素因数の和:306608

約数の個数: 64

約数和(自身を含む): 882973440

約数和(自身を除く): 625440360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 306587, 613174, 919761, 1226348, 1532935, 1839522, 2146109, 2452696, 3065870, 3679044, 4292218, 4598805, 6131740, 6438327, 7358088, 8584436, 9197610, 10730545, 12263480, 12876654, 17168872, 18395220, 21461090, 25753308, 32191635, 36790440, 42922180, 51506616, 64383270, 85844360, 128766540, 257533080]

約数ペア:

[(1, 257533080), (2, 128766540), (3, 85844360), (4, 64383270), (5, 51506616), (6, 42922180), (7, 36790440), (8, 32191635), (10, 25753308), (12, 21461090), (14, 18395220), (15, 17168872), (20, 12876654), (21, 12263480), (24, 10730545), (28, 9197610), (30, 8584436), (35, 7358088), (40, 6438327), (42, 6131740), (56, 4598805), (60, 4292218), (70, 3679044), (84, 3065870), (105, 2452696), (120, 2146109), (140, 1839522), (168, 1532935), (210, 1226348), (280, 919761), (420, 613174), (840, 306587)]