21419510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1949}}^1$

素因数の和:2120

約数の個数: 32

約数和(自身を含む): 44366400

約数和(自身を除く): 22946890

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 157, 314, 785, 1099, 1570, 1949, 2198, 3898, 5495, 9745, 10990, 13643, 19490, 27286, 68215, 136430, 305993, 611986, 1529965, 2141951, 3059930, 4283902, 10709755, 21419510]

約数ペア:

[(1, 21419510), (2, 10709755), (5, 4283902), (7, 3059930), (10, 2141951), (14, 1529965), (35, 611986), (70, 305993), (157, 136430), (314, 68215), (785, 27286), (1099, 19490), (1570, 13643), (1949, 10990), (2198, 9745), (3898, 5495)]