66718215

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{37}}^2$

素因数の和:126

約数の個数: 72

約数和(自身を含む): 128656080

約数和(自身を除く): 61937865

約数列:

[1, 3, 5, 9, 15, 19, 27, 37, 45, 57, 95, 111, 135, 171, 185, 285, 333, 361, 513, 555, 703, 855, 999, 1083, 1369, 1665, 1805, 2109, 2565, 3249, 3515, 4107, 4995, 5415, 6327, 6845, 9747, 10545, 12321, 13357, 16245, 18981, 20535, 26011, 31635, 36963, 40071, 48735, 61605, 66785, 78033, 94905, 120213, 130055, 184815, 200355, 234099, 360639, 390165, 494209, 601065, 702297, 1170495, 1482627, 1803195, 2471045, 3511485, 4447881, 7413135, 13343643, 22239405, 66718215]

約数ペア:

[(1, 66718215), (3, 22239405), (5, 13343643), (9, 7413135), (15, 4447881), (19, 3511485), (27, 2471045), (37, 1803195), (45, 1482627), (57, 1170495), (95, 702297), (111, 601065), (135, 494209), (171, 390165), (185, 360639), (285, 234099), (333, 200355), (361, 184815), (513, 130055), (555, 120213), (703, 94905), (855, 78033), (999, 66785), (1083, 61605), (1369, 48735), (1665, 40071), (1805, 36963), (2109, 31635), (2565, 26011), (3249, 20535), (3515, 18981), (4107, 16245), (4995, 13357), (5415, 12321), (6327, 10545), (6845, 9747)]