81569680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1061}}^1$

素因数の和:1136

約数の個数: 60

約数和(自身を含む): 196149276

約数和(自身を除く): 114579596

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 961, 1061, 1240, 1922, 2122, 2480, 3844, 4244, 4805, 5305, 7688, 8488, 9610, 10610, 15376, 16976, 19220, 21220, 32891, 38440, 42440, 65782, 76880, 84880, 131564, 164455, 263128, 328910, 526256, 657820, 1019621, 1315640, 2039242, 2631280, 4078484, 5098105, 8156968, 10196210, 16313936, 20392420, 40784840, 81569680]

約数ペア:

[(1, 81569680), (2, 40784840), (4, 20392420), (5, 16313936), (8, 10196210), (10, 8156968), (16, 5098105), (20, 4078484), (31, 2631280), (40, 2039242), (62, 1315640), (80, 1019621), (124, 657820), (155, 526256), (248, 328910), (310, 263128), (496, 164455), (620, 131564), (961, 84880), (1061, 76880), (1240, 65782), (1922, 42440), (2122, 38440), (2480, 32891), (3844, 21220), (4244, 19220), (4805, 16976), (5305, 15376), (7688, 10610), (8488, 9610)]