20906745

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{673}}^1$

素因数の和:809

約数の個数: 32

約数和(自身を含む): 35587200

約数和(自身を除く): 14680455

約数列:

[1, 3, 5, 15, 19, 57, 95, 109, 285, 327, 545, 673, 1635, 2019, 2071, 3365, 6213, 10095, 10355, 12787, 31065, 38361, 63935, 73357, 191805, 220071, 366785, 1100355, 1393783, 4181349, 6968915, 20906745]

約数ペア:

[(1, 20906745), (3, 6968915), (5, 4181349), (15, 1393783), (19, 1100355), (57, 366785), (95, 220071), (109, 191805), (285, 73357), (327, 63935), (545, 38361), (673, 31065), (1635, 12787), (2019, 10355), (2071, 10095), (3365, 6213)]