20561710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{571}}^1$

素因数の和:868

約数の個数: 32

約数和(自身を含む): 40072032

約数和(自身を除く): 19510322

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 277, 554, 571, 1142, 1385, 2770, 2855, 3601, 5710, 7202, 7423, 14846, 18005, 36010, 37115, 74230, 158167, 316334, 790835, 1581670, 2056171, 4112342, 10280855, 20561710]

約数ペア:

[(1, 20561710), (2, 10280855), (5, 4112342), (10, 2056171), (13, 1581670), (26, 790835), (65, 316334), (130, 158167), (277, 74230), (554, 37115), (571, 36010), (1142, 18005), (1385, 14846), (2770, 7423), (2855, 7202), (3601, 5710)]