261980680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{3967}}^1$

素因数の和:4118

約数の個数: 64

約数和(自身を含む): 639959040

約数和(自身を除く): 377978360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 127, 130, 254, 260, 508, 520, 635, 1016, 1270, 1651, 2540, 3302, 3967, 5080, 6604, 7934, 8255, 13208, 15868, 16510, 19835, 31736, 33020, 39670, 51571, 66040, 79340, 103142, 158680, 206284, 257855, 412568, 503809, 515710, 1007618, 1031420, 2015236, 2062840, 2519045, 4030472, 5038090, 6549517, 10076180, 13099034, 20152360, 26198068, 32747585, 52396136, 65495170, 130990340, 261980680]

約数ペア:

[(1, 261980680), (2, 130990340), (4, 65495170), (5, 52396136), (8, 32747585), (10, 26198068), (13, 20152360), (20, 13099034), (26, 10076180), (40, 6549517), (52, 5038090), (65, 4030472), (104, 2519045), (127, 2062840), (130, 2015236), (254, 1031420), (260, 1007618), (508, 515710), (520, 503809), (635, 412568), (1016, 257855), (1270, 206284), (1651, 158680), (2540, 103142), (3302, 79340), (3967, 66040), (5080, 51571), (6604, 39670), (7934, 33020), (8255, 31736), (13208, 19835), (15868, 16510)]