81349840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{547}}^1$

素因数の和:597

約数の個数: 120

約数和(自身を含む): 223833888

約数和(自身を除く): 142484048

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, 169, 176, 208, 220, 260, 286, 338, 440, 520, 547, 572, 676, 715, 845, 880, 1040, 1094, 1144, 1352, 1430, 1690, 1859, 2188, 2288, 2704, 2735, 2860, 3380, 3718, 4376, 5470, 5720, 6017, 6760, 7111, 7436, 8752, 9295, 10940, 11440, 12034, 13520, 14222, 14872, 18590, 21880, 24068, 28444, 29744, 30085, 35555, 37180, 43760, 48136, 56888, 60170, 71110, 74360, 78221, 92443, 96272, 113776, 120340, 142220, 148720, 156442, 184886, 240680, 284440, 312884, 369772, 391105, 462215, 481360, 568880, 625768, 739544, 782210, 924430, 1016873, 1251536, 1479088, 1564420, 1848860, 2033746, 3128840, 3697720, 4067492, 5084365, 6257680, 7395440, 8134984, 10168730, 16269968, 20337460, 40674920, 81349840]

約数ペア:

[(1, 81349840), (2, 40674920), (4, 20337460), (5, 16269968), (8, 10168730), (10, 8134984), (11, 7395440), (13, 6257680), (16, 5084365), (20, 4067492), (22, 3697720), (26, 3128840), (40, 2033746), (44, 1848860), (52, 1564420), (55, 1479088), (65, 1251536), (80, 1016873), (88, 924430), (104, 782210), (110, 739544), (130, 625768), (143, 568880), (169, 481360), (176, 462215), (208, 391105), (220, 369772), (260, 312884), (286, 284440), (338, 240680), (440, 184886), (520, 156442), (547, 148720), (572, 142220), (676, 120340), (715, 113776), (845, 96272), (880, 92443), (1040, 78221), (1094, 74360), (1144, 71110), (1352, 60170), (1430, 56888), (1690, 48136), (1859, 43760), (2188, 37180), (2288, 35555), (2704, 30085), (2735, 29744), (2860, 28444), (3380, 24068), (3718, 21880), (4376, 18590), (5470, 14872), (5720, 14222), (6017, 13520), (6760, 12034), (7111, 11440), (7436, 10940), (8752, 9295)]