81687040

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1877}}^1$

素因数の和:1917

約数の個数: 80

約数和(自身を含む): 207488952

約数和(自身を除く): 125801912

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 512, 544, 640, 680, 1088, 1280, 1360, 1877, 2176, 2560, 2720, 3754, 4352, 5440, 7508, 8704, 9385, 10880, 15016, 18770, 21760, 30032, 31909, 37540, 43520, 60064, 63818, 75080, 120128, 127636, 150160, 159545, 240256, 255272, 300320, 319090, 480512, 510544, 600640, 638180, 961024, 1021088, 1201280, 1276360, 2042176, 2402560, 2552720, 4084352, 4805120, 5105440, 8168704, 10210880, 16337408, 20421760, 40843520, 81687040]

約数ペア:

[(1, 81687040), (2, 40843520), (4, 20421760), (5, 16337408), (8, 10210880), (10, 8168704), (16, 5105440), (17, 4805120), (20, 4084352), (32, 2552720), (34, 2402560), (40, 2042176), (64, 1276360), (68, 1201280), (80, 1021088), (85, 961024), (128, 638180), (136, 600640), (160, 510544), (170, 480512), (256, 319090), (272, 300320), (320, 255272), (340, 240256), (512, 159545), (544, 150160), (640, 127636), (680, 120128), (1088, 75080), (1280, 63818), (1360, 60064), (1877, 43520), (2176, 37540), (2560, 31909), (2720, 30032), (3754, 21760), (4352, 18770), (5440, 15016), (7508, 10880), (8704, 9385)]