18713750

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{1361}}^1$

素因数の和:1394

約数の個数: 40

約数和(自身を含む): 38293992

約数和(自身を除く): 19580242

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 625, 1250, 1361, 1375, 2722, 2750, 6805, 6875, 13610, 13750, 14971, 29942, 34025, 68050, 74855, 149710, 170125, 340250, 374275, 748550, 850625, 1701250, 1871375, 3742750, 9356875, 18713750]

約数ペア:

[(1, 18713750), (2, 9356875), (5, 3742750), (10, 1871375), (11, 1701250), (22, 850625), (25, 748550), (50, 374275), (55, 340250), (110, 170125), (125, 149710), (250, 74855), (275, 68050), (550, 34025), (625, 29942), (1250, 14971), (1361, 13750), (1375, 13610), (2722, 6875), (2750, 6805)]