20639535

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28081}}^1$

素因数の和:28103

約数の個数: 24

約数和(自身を含む): 38416176

約数和(自身を除く): 17776641

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28081, 84243, 140405, 196567, 421215, 589701, 982835, 1375969, 2948505, 4127907, 6879845, 20639535]

約数ペア:

[(1, 20639535), (3, 6879845), (5, 4127907), (7, 2948505), (15, 1375969), (21, 982835), (35, 589701), (49, 421215), (105, 196567), (147, 140405), (245, 84243), (735, 28081)]