20809910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{5113}}^1$

素因数の和:5168

約数の個数: 32

約数和(自身を含む): 41975712

約数和(自身を除く): 21165802

約数列:

[1, 2, 5, 10, 11, 22, 37, 55, 74, 110, 185, 370, 407, 814, 2035, 4070, 5113, 10226, 25565, 51130, 56243, 112486, 189181, 281215, 378362, 562430, 945905, 1891810, 2080991, 4161982, 10404955, 20809910]

約数ペア:

[(1, 20809910), (2, 10404955), (5, 4161982), (10, 2080991), (11, 1891810), (22, 945905), (37, 562430), (55, 378362), (74, 281215), (110, 189181), (185, 112486), (370, 56243), (407, 51130), (814, 25565), (2035, 10226), (4070, 5113)]