20973890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{2909}}^1$

素因数の和:3026

約数の個数: 32

約数和(自身を含む): 43580160

約数和(自身を除く): 22606270

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 103, 206, 515, 721, 1030, 1442, 2909, 3605, 5818, 7210, 14545, 20363, 29090, 40726, 101815, 203630, 299627, 599254, 1498135, 2097389, 2996270, 4194778, 10486945, 20973890]

約数ペア:

[(1, 20973890), (2, 10486945), (5, 4194778), (7, 2996270), (10, 2097389), (14, 1498135), (35, 599254), (70, 299627), (103, 203630), (206, 101815), (515, 40726), (721, 29090), (1030, 20363), (1442, 14545), (2909, 7210), (3605, 5818)]