204702540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{487387}}^1$

素因数の和:487406

約数の個数: 48

約数和(自身を含む): 655049472

約数和(自身を除く): 450346932

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, 487387, 974774, 1462161, 1949548, 2436935, 2924322, 3411709, 4873870, 5848644, 6823418, 7310805, 9747740, 10235127, 13646836, 14621610, 17058545, 20470254, 29243220, 34117090, 40940508, 51175635, 68234180, 102351270, 204702540]

約数ペア:

[(1, 204702540), (2, 102351270), (3, 68234180), (4, 51175635), (5, 40940508), (6, 34117090), (7, 29243220), (10, 20470254), (12, 17058545), (14, 14621610), (15, 13646836), (20, 10235127), (21, 9747740), (28, 7310805), (30, 6823418), (35, 5848644), (42, 4873870), (60, 3411709), (70, 2924322), (84, 2436935), (105, 1949548), (140, 1462161), (210, 974774), (420, 487387)]