81412760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:409

約数の個数: 128

約数和(自身を含む): 220872960

約数和(自身を除く): 139460200

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 43, 44, 52, 55, 65, 86, 88, 104, 110, 130, 143, 172, 215, 220, 260, 286, 331, 344, 430, 440, 473, 520, 559, 572, 662, 715, 860, 946, 1118, 1144, 1324, 1430, 1655, 1720, 1892, 2236, 2365, 2648, 2795, 2860, 3310, 3641, 3784, 4303, 4472, 4730, 5590, 5720, 6149, 6620, 7282, 8606, 9460, 11180, 12298, 13240, 14233, 14564, 17212, 18205, 18920, 21515, 22360, 24596, 28466, 29128, 30745, 34424, 36410, 43030, 47333, 49192, 56932, 61490, 71165, 72820, 86060, 94666, 113864, 122980, 142330, 145640, 156563, 172120, 185029, 189332, 236665, 245960, 284660, 313126, 370058, 378664, 473330, 569320, 626252, 740116, 782815, 925145, 946660, 1252504, 1480232, 1565630, 1850290, 1893320, 2035319, 3131260, 3700580, 4070638, 6262520, 7401160, 8141276, 10176595, 16282552, 20353190, 40706380, 81412760]

約数ペア:

[(1, 81412760), (2, 40706380), (4, 20353190), (5, 16282552), (8, 10176595), (10, 8141276), (11, 7401160), (13, 6262520), (20, 4070638), (22, 3700580), (26, 3131260), (40, 2035319), (43, 1893320), (44, 1850290), (52, 1565630), (55, 1480232), (65, 1252504), (86, 946660), (88, 925145), (104, 782815), (110, 740116), (130, 626252), (143, 569320), (172, 473330), (215, 378664), (220, 370058), (260, 313126), (286, 284660), (331, 245960), (344, 236665), (430, 189332), (440, 185029), (473, 172120), (520, 156563), (559, 145640), (572, 142330), (662, 122980), (715, 113864), (860, 94666), (946, 86060), (1118, 72820), (1144, 71165), (1324, 61490), (1430, 56932), (1655, 49192), (1720, 47333), (1892, 43030), (2236, 36410), (2365, 34424), (2648, 30745), (2795, 29128), (2860, 28466), (3310, 24596), (3641, 22360), (3784, 21515), (4303, 18920), (4472, 18205), (4730, 17212), (5590, 14564), (5720, 14233), (6149, 13240), (6620, 12298), (7282, 11180), (8606, 9460)]