20305305

素因数分解:

$3^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{919}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 35305920

約数和(自身を除く): 15000615

約数列:

[1, 3, 5, 9, 15, 45, 491, 919, 1473, 2455, 2757, 4419, 4595, 7365, 8271, 13785, 22095, 41355, 451229, 1353687, 2256145, 4061061, 6768435, 20305305]

約数ペア:

[(1, 20305305), (3, 6768435), (5, 4061061), (9, 2256145), (15, 1353687), (45, 451229), (491, 41355), (919, 22095), (1473, 13785), (2455, 8271), (2757, 7365), (4419, 4595)]