20277725

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1451}}^1$

素因数の和:1517

約数の個数: 24

約数和(自身を含む): 27727392

約数和(自身を除く): 7449667

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 559, 1075, 1451, 2795, 7255, 13975, 18863, 36275, 62393, 94315, 311965, 471575, 811109, 1559825, 4055545, 20277725]

約数ペア:

[(1, 20277725), (5, 4055545), (13, 1559825), (25, 811109), (43, 471575), (65, 311965), (215, 94315), (325, 62393), (559, 36275), (1075, 18863), (1451, 13975), (2795, 7255)]