321597780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{109387}}^1$

素因数の和:109413

約数の個数: 72

約数和(自身を含む): 1047499488

約数和(自身を除く): 725901708

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 109387, 218774, 328161, 437548, 546935, 656322, 765709, 1093870, 1312644, 1531418, 1640805, 2187740, 2297127, 3062836, 3281610, 3828545, 4594254, 5359963, 6563220, 7657090, 9188508, 10719926, 11485635, 15314180, 16079889, 21439852, 22971270, 26799815, 32159778, 45942540, 53599630, 64319556, 80399445, 107199260, 160798890, 321597780]

約数ペア:

[(1, 321597780), (2, 160798890), (3, 107199260), (4, 80399445), (5, 64319556), (6, 53599630), (7, 45942540), (10, 32159778), (12, 26799815), (14, 22971270), (15, 21439852), (20, 16079889), (21, 15314180), (28, 11485635), (30, 10719926), (35, 9188508), (42, 7657090), (49, 6563220), (60, 5359963), (70, 4594254), (84, 3828545), (98, 3281610), (105, 3062836), (140, 2297127), (147, 2187740), (196, 1640805), (210, 1531418), (245, 1312644), (294, 1093870), (420, 765709), (490, 656322), (588, 546935), (735, 437548), (980, 328161), (1470, 218774), (2940, 109387)]