20399500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3709}}^1$

素因数の和:3739

約数の個数: 48

約数和(自身を含む): 48615840

約数和(自身を除く): 28216340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3709, 5500, 7418, 14836, 18545, 37090, 40799, 74180, 81598, 92725, 163196, 185450, 203995, 370900, 407990, 463625, 815980, 927250, 1019975, 1854500, 2039950, 4079900, 5099875, 10199750, 20399500]

約数ペア:

[(1, 20399500), (2, 10199750), (4, 5099875), (5, 4079900), (10, 2039950), (11, 1854500), (20, 1019975), (22, 927250), (25, 815980), (44, 463625), (50, 407990), (55, 370900), (100, 203995), (110, 185450), (125, 163196), (220, 92725), (250, 81598), (275, 74180), (500, 40799), (550, 37090), (1100, 18545), (1375, 14836), (2750, 7418), (3709, 5500)]