81445870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 166738176

約数和(自身を除く): 85292306

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 67, 86, 110, 134, 215, 257, 335, 430, 473, 514, 670, 737, 946, 1285, 1474, 2365, 2570, 2827, 2881, 3685, 4730, 5654, 5762, 7370, 11051, 14135, 14405, 17219, 22102, 28270, 28810, 31691, 34438, 55255, 63382, 86095, 110510, 121561, 158455, 172190, 189409, 243122, 316910, 378818, 607805, 740417, 947045, 1215610, 1480834, 1894090, 3702085, 7404170, 8144587, 16289174, 40722935, 81445870]

約数ペア:

[(1, 81445870), (2, 40722935), (5, 16289174), (10, 8144587), (11, 7404170), (22, 3702085), (43, 1894090), (55, 1480834), (67, 1215610), (86, 947045), (110, 740417), (134, 607805), (215, 378818), (257, 316910), (335, 243122), (430, 189409), (473, 172190), (514, 158455), (670, 121561), (737, 110510), (946, 86095), (1285, 63382), (1474, 55255), (2365, 34438), (2570, 31691), (2827, 28810), (2881, 28270), (3685, 22102), (4730, 17219), (5654, 14405), (5762, 14135), (7370, 11051)]