21237825

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{5779}}^1$

素因数の和:5806

約数の個数: 36

約数和(自身を含む): 40853040

約数和(自身を除く): 19615215

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 525, 735, 1225, 3675, 5779, 17337, 28895, 40453, 86685, 121359, 144475, 202265, 283171, 433425, 606795, 849513, 1011325, 1415855, 3033975, 4247565, 7079275, 21237825]

約数ペア:

[(1, 21237825), (3, 7079275), (5, 4247565), (7, 3033975), (15, 1415855), (21, 1011325), (25, 849513), (35, 606795), (49, 433425), (75, 283171), (105, 202265), (147, 144475), (175, 121359), (245, 86685), (525, 40453), (735, 28895), (1225, 17337), (3675, 5779)]