20287520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11527}}^1$

素因数の和:11553

約数の個数: 48

約数和(自身を含む): 52291008

約数和(自身を除く): 32003488

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11527, 23054, 46108, 57635, 92216, 115270, 126797, 184432, 230540, 253594, 368864, 461080, 507188, 633985, 922160, 1014376, 1267970, 1844320, 2028752, 2535940, 4057504, 5071880, 10143760, 20287520]

約数ペア:

[(1, 20287520), (2, 10143760), (4, 5071880), (5, 4057504), (8, 2535940), (10, 2028752), (11, 1844320), (16, 1267970), (20, 1014376), (22, 922160), (32, 633985), (40, 507188), (44, 461080), (55, 368864), (80, 253594), (88, 230540), (110, 184432), (160, 126797), (176, 115270), (220, 92216), (352, 57635), (440, 46108), (880, 23054), (1760, 11527)]