21478450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{563}}^1$

素因数の和:691

約数の個数: 48

約数和(自身を含む): 46157760

約数和(自身を除く): 24679310

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 109, 175, 218, 350, 545, 563, 763, 1090, 1126, 1526, 2725, 2815, 3815, 3941, 5450, 5630, 7630, 7882, 14075, 19075, 19705, 28150, 38150, 39410, 61367, 98525, 122734, 197050, 306835, 429569, 613670, 859138, 1534175, 2147845, 3068350, 4295690, 10739225, 21478450]

約数ペア:

[(1, 21478450), (2, 10739225), (5, 4295690), (7, 3068350), (10, 2147845), (14, 1534175), (25, 859138), (35, 613670), (50, 429569), (70, 306835), (109, 197050), (175, 122734), (218, 98525), (350, 61367), (545, 39410), (563, 38150), (763, 28150), (1090, 19705), (1126, 19075), (1526, 14075), (2725, 7882), (2815, 7630), (3815, 5630), (3941, 5450)]