81783040

素因数分解:

$2^8\times 5^1\times {\mathrm{181}}^1\times {\mathrm{353}}^1$

素因数の和:555

約数の個数: 72

約数和(自身を含む): 197536248

約数和(自身を除く): 115753208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 181, 256, 320, 353, 362, 640, 706, 724, 905, 1280, 1412, 1448, 1765, 1810, 2824, 2896, 3530, 3620, 5648, 5792, 7060, 7240, 11296, 11584, 14120, 14480, 22592, 23168, 28240, 28960, 45184, 46336, 56480, 57920, 63893, 90368, 112960, 115840, 127786, 225920, 231680, 255572, 319465, 451840, 511144, 638930, 1022288, 1277860, 2044576, 2555720, 4089152, 5111440, 8178304, 10222880, 16356608, 20445760, 40891520, 81783040]

約数ペア:

[(1, 81783040), (2, 40891520), (4, 20445760), (5, 16356608), (8, 10222880), (10, 8178304), (16, 5111440), (20, 4089152), (32, 2555720), (40, 2044576), (64, 1277860), (80, 1022288), (128, 638930), (160, 511144), (181, 451840), (256, 319465), (320, 255572), (353, 231680), (362, 225920), (640, 127786), (706, 115840), (724, 112960), (905, 90368), (1280, 63893), (1412, 57920), (1448, 56480), (1765, 46336), (1810, 45184), (2824, 28960), (2896, 28240), (3530, 23168), (3620, 22592), (5648, 14480), (5792, 14120), (7060, 11584), (7240, 11296)]