20993020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{971}}^1$

素因数の和:1050

約数の個数: 48

約数和(自身を含む): 47029248

約数和(自身を除く): 26036228

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 47, 92, 94, 115, 188, 230, 235, 460, 470, 940, 971, 1081, 1942, 2162, 3884, 4324, 4855, 5405, 9710, 10810, 19420, 21620, 22333, 44666, 45637, 89332, 91274, 111665, 182548, 223330, 228185, 446660, 456370, 912740, 1049651, 2099302, 4198604, 5248255, 10496510, 20993020]

約数ペア:

[(1, 20993020), (2, 10496510), (4, 5248255), (5, 4198604), (10, 2099302), (20, 1049651), (23, 912740), (46, 456370), (47, 446660), (92, 228185), (94, 223330), (115, 182548), (188, 111665), (230, 91274), (235, 89332), (460, 45637), (470, 44666), (940, 22333), (971, 21620), (1081, 19420), (1942, 10810), (2162, 9710), (3884, 5405), (4324, 4855)]