68440920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{887}}^1$

素因数の和:1544

約数の個数: 64

約数和(自身を含む): 205873920

約数和(自身を除く): 137433000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 643, 887, 1286, 1774, 1929, 2572, 2661, 3215, 3548, 3858, 4435, 5144, 5322, 6430, 7096, 7716, 8870, 9645, 10644, 12860, 13305, 15432, 17740, 19290, 21288, 25720, 26610, 35480, 38580, 53220, 77160, 106440, 570341, 1140682, 1711023, 2281364, 2851705, 3422046, 4562728, 5703410, 6844092, 8555115, 11406820, 13688184, 17110230, 22813640, 34220460, 68440920]

約数ペア:

[(1, 68440920), (2, 34220460), (3, 22813640), (4, 17110230), (5, 13688184), (6, 11406820), (8, 8555115), (10, 6844092), (12, 5703410), (15, 4562728), (20, 3422046), (24, 2851705), (30, 2281364), (40, 1711023), (60, 1140682), (120, 570341), (643, 106440), (887, 77160), (1286, 53220), (1774, 38580), (1929, 35480), (2572, 26610), (2661, 25720), (3215, 21288), (3548, 19290), (3858, 17740), (4435, 15432), (5144, 13305), (5322, 12860), (6430, 10644), (7096, 9645), (7716, 8870)]