20438000

素因数分解:

$2^4\times 5^3\times {\mathrm{11}}^1\times {\mathrm{929}}^1$

素因数の和:963

約数の個数: 80

約数和(自身を含む): 53969760

約数和(自身を除く): 33531760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 200, 220, 250, 275, 400, 440, 500, 550, 880, 929, 1000, 1100, 1375, 1858, 2000, 2200, 2750, 3716, 4400, 4645, 5500, 7432, 9290, 10219, 11000, 14864, 18580, 20438, 22000, 23225, 37160, 40876, 46450, 51095, 74320, 81752, 92900, 102190, 116125, 163504, 185800, 204380, 232250, 255475, 371600, 408760, 464500, 510950, 817520, 929000, 1021900, 1277375, 1858000, 2043800, 2554750, 4087600, 5109500, 10219000, 20438000]

約数ペア:

[(1, 20438000), (2, 10219000), (4, 5109500), (5, 4087600), (8, 2554750), (10, 2043800), (11, 1858000), (16, 1277375), (20, 1021900), (22, 929000), (25, 817520), (40, 510950), (44, 464500), (50, 408760), (55, 371600), (80, 255475), (88, 232250), (100, 204380), (110, 185800), (125, 163504), (176, 116125), (200, 102190), (220, 92900), (250, 81752), (275, 74320), (400, 51095), (440, 46450), (500, 40876), (550, 37160), (880, 23225), (929, 22000), (1000, 20438), (1100, 18580), (1375, 14864), (1858, 11000), (2000, 10219), (2200, 9290), (2750, 7432), (3716, 5500), (4400, 4645)]