18987315985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1\times {\mathrm{977}}^1$

素因数の和:1218

約数の個数: 64

約数和(自身を含む): 26008853760

約数和(自身を除く): 7021537775

約数列:

[1, 5, 11, 53, 55, 59, 113, 265, 295, 565, 583, 649, 977, 1243, 2915, 3127, 3245, 4885, 5989, 6215, 6667, 10747, 15635, 29945, 33335, 34397, 51781, 53735, 57643, 65879, 73337, 110401, 171985, 258905, 288215, 329395, 353351, 366685, 552005, 569591, 634073, 1214411, 1766755, 2847955, 3055079, 3170365, 3886861, 5851253, 6072055, 6513659, 15275395, 19434305, 29256265, 32568295, 33605869, 64363783, 71650249, 168029345, 321818915, 345223927, 358251245, 1726119635, 3797463197, 18987315985]

約数ペア:

[(1, 18987315985), (5, 3797463197), (11, 1726119635), (53, 358251245), (55, 345223927), (59, 321818915), (113, 168029345), (265, 71650249), (295, 64363783), (565, 33605869), (583, 32568295), (649, 29256265), (977, 19434305), (1243, 15275395), (2915, 6513659), (3127, 6072055), (3245, 5851253), (4885, 3886861), (5989, 3170365), (6215, 3055079), (6667, 2847955), (10747, 1766755), (15635, 1214411), (29945, 634073), (33335, 569591), (34397, 552005), (51781, 366685), (53735, 353351), (57643, 329395), (65879, 288215), (73337, 258905), (110401, 171985)]