1289728180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:569

約数の個数: 96

約数和(自身を含む): 2971422720

約数和(自身を除く): 1681694540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 127, 130, 139, 254, 260, 278, 281, 508, 556, 562, 635, 695, 1124, 1270, 1390, 1405, 1651, 1807, 2540, 2780, 2810, 3302, 3614, 3653, 5620, 6604, 7228, 7306, 8255, 9035, 14612, 16510, 17653, 18070, 18265, 33020, 35306, 35687, 36140, 36530, 39059, 70612, 71374, 73060, 78118, 88265, 142748, 156236, 176530, 178435, 195295, 229489, 353060, 356870, 390590, 458978, 463931, 507767, 713740, 781180, 917956, 927862, 1015534, 1147445, 1855724, 2031068, 2294890, 2319655, 2538835, 4589780, 4639310, 4960493, 5077670, 9278620, 9920986, 10155340, 19841972, 24802465, 49604930, 64486409, 99209860, 128972818, 257945636, 322432045, 644864090, 1289728180]

約数ペア:

[(1, 1289728180), (2, 644864090), (4, 322432045), (5, 257945636), (10, 128972818), (13, 99209860), (20, 64486409), (26, 49604930), (52, 24802465), (65, 19841972), (127, 10155340), (130, 9920986), (139, 9278620), (254, 5077670), (260, 4960493), (278, 4639310), (281, 4589780), (508, 2538835), (556, 2319655), (562, 2294890), (635, 2031068), (695, 1855724), (1124, 1147445), (1270, 1015534), (1390, 927862), (1405, 917956), (1651, 781180), (1807, 713740), (2540, 507767), (2780, 463931), (2810, 458978), (3302, 390590), (3614, 356870), (3653, 353060), (5620, 229489), (6604, 195295), (7228, 178435), (7306, 176530), (8255, 156236), (9035, 142748), (14612, 88265), (16510, 78118), (17653, 73060), (18070, 71374), (18265, 70612), (33020, 39059), (35306, 36530), (35687, 36140)]