81807440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7151}}^1$

素因数の和:7188

約数の個数: 80

約数和(自身を含む): 223485696

約数和(自身を除く): 141678256

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 2288, 2860, 5720, 7151, 11440, 14302, 28604, 35755, 57208, 71510, 78661, 92963, 114416, 143020, 157322, 185926, 286040, 314644, 371852, 393305, 464815, 572080, 629288, 743704, 786610, 929630, 1022593, 1258576, 1487408, 1573220, 1859260, 2045186, 3146440, 3718520, 4090372, 5112965, 6292880, 7437040, 8180744, 10225930, 16361488, 20451860, 40903720, 81807440]

約数ペア:

[(1, 81807440), (2, 40903720), (4, 20451860), (5, 16361488), (8, 10225930), (10, 8180744), (11, 7437040), (13, 6292880), (16, 5112965), (20, 4090372), (22, 3718520), (26, 3146440), (40, 2045186), (44, 1859260), (52, 1573220), (55, 1487408), (65, 1258576), (80, 1022593), (88, 929630), (104, 786610), (110, 743704), (130, 629288), (143, 572080), (176, 464815), (208, 393305), (220, 371852), (260, 314644), (286, 286040), (440, 185926), (520, 157322), (572, 143020), (715, 114416), (880, 92963), (1040, 78661), (1144, 71510), (1430, 57208), (2288, 35755), (2860, 28604), (5720, 14302), (7151, 11440)]