21690748

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{5483}}^1$

素因数の和:5553

約数の個数: 24

約数和(自身を含む): 40537728

約数和(自身を除く): 18846980

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956, 5483, 10966, 21932, 126109, 235769, 252218, 471538, 504436, 943076, 5422687, 10845374, 21690748]

約数ペア:

[(1, 21690748), (2, 10845374), (4, 5422687), (23, 943076), (43, 504436), (46, 471538), (86, 252218), (92, 235769), (172, 126109), (989, 21932), (1978, 10966), (3956, 5483)]