18940900

素因数分解:

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

素因数の和:349

約数の個数: 72

約数和(自身を含む): 45684576

約数和(自身を除く): 26743676

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 67, 100, 110, 134, 220, 257, 268, 275, 335, 514, 550, 670, 737, 1028, 1100, 1285, 1340, 1474, 1675, 2570, 2827, 2948, 3350, 3685, 5140, 5654, 6425, 6700, 7370, 11308, 12850, 14135, 14740, 17219, 18425, 25700, 28270, 34438, 36850, 56540, 68876, 70675, 73700, 86095, 141350, 172190, 189409, 282700, 344380, 378818, 430475, 757636, 860950, 947045, 1721900, 1894090, 3788180, 4735225, 9470450, 18940900]

約数ペア:

[(1, 18940900), (2, 9470450), (4, 4735225), (5, 3788180), (10, 1894090), (11, 1721900), (20, 947045), (22, 860950), (25, 757636), (44, 430475), (50, 378818), (55, 344380), (67, 282700), (100, 189409), (110, 172190), (134, 141350), (220, 86095), (257, 73700), (268, 70675), (275, 68876), (335, 56540), (514, 36850), (550, 34438), (670, 28270), (737, 25700), (1028, 18425), (1100, 17219), (1285, 14740), (1340, 14135), (1474, 12850), (1675, 11308), (2570, 7370), (2827, 6700), (2948, 6425), (3350, 5654), (3685, 5140)]