20913695

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 28892160

約数和(自身を除く): 7978465

約数列:

[1, 5, 11, 37, 43, 55, 185, 215, 239, 407, 473, 1195, 1591, 2035, 2365, 2629, 7955, 8843, 10277, 13145, 17501, 44215, 51385, 87505, 97273, 113047, 380249, 486365, 565235, 1901245, 4182739, 20913695]

約数ペア:

[(1, 20913695), (5, 4182739), (11, 1901245), (37, 565235), (43, 486365), (55, 380249), (185, 113047), (215, 97273), (239, 87505), (407, 51385), (473, 44215), (1195, 17501), (1591, 13145), (2035, 10277), (2365, 8843), (2629, 7955)]