20839900

素因数分解:

$2^2\times 5^2\times {\mathrm{271}}^1\times {\mathrm{769}}^1$

素因数の和:1054

約数の個数: 36

約数和(自身を含む): 45448480

約数和(自身を除く): 24608580

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 271, 542, 769, 1084, 1355, 1538, 2710, 3076, 3845, 5420, 6775, 7690, 13550, 15380, 19225, 27100, 38450, 76900, 208399, 416798, 833596, 1041995, 2083990, 4167980, 5209975, 10419950, 20839900]

約数ペア:

[(1, 20839900), (2, 10419950), (4, 5209975), (5, 4167980), (10, 2083990), (20, 1041995), (25, 833596), (50, 416798), (100, 208399), (271, 76900), (542, 38450), (769, 27100), (1084, 19225), (1355, 15380), (1538, 13550), (2710, 7690), (3076, 6775), (3845, 5420)]