391518540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{310729}}^1$

素因数の和:310751

約数の個数: 72

約数和(自身を含む): 1357268640

約数和(自身を除く): 965750100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 310729, 621458, 932187, 1242916, 1553645, 1864374, 2175103, 2796561, 3107290, 3728748, 4350206, 4660935, 5593122, 6214580, 6525309, 8700412, 9321870, 10875515, 11186244, 13050618, 13982805, 18643740, 19575927, 21751030, 26101236, 27965610, 32626545, 39151854, 43502060, 55931220, 65253090, 78303708, 97879635, 130506180, 195759270, 391518540]

約数ペア:

[(1, 391518540), (2, 195759270), (3, 130506180), (4, 97879635), (5, 78303708), (6, 65253090), (7, 55931220), (9, 43502060), (10, 39151854), (12, 32626545), (14, 27965610), (15, 26101236), (18, 21751030), (20, 19575927), (21, 18643740), (28, 13982805), (30, 13050618), (35, 11186244), (36, 10875515), (42, 9321870), (45, 8700412), (60, 6525309), (63, 6214580), (70, 5593122), (84, 4660935), (90, 4350206), (105, 3728748), (126, 3107290), (140, 2796561), (180, 2175103), (210, 1864374), (252, 1553645), (315, 1242916), (420, 932187), (630, 621458), (1260, 310729)]