20447172

素因数分解:

$2^2\times 3^2\times {\mathrm{353}}^1\times {\mathrm{1609}}^1$

素因数の和:1972

約数の個数: 36

約数和(自身を含む): 51864540

約数和(自身を除く): 31417368

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 353, 706, 1059, 1412, 1609, 2118, 3177, 3218, 4236, 4827, 6354, 6436, 9654, 12708, 14481, 19308, 28962, 57924, 567977, 1135954, 1703931, 2271908, 3407862, 5111793, 6815724, 10223586, 20447172]

約数ペア:

[(1, 20447172), (2, 10223586), (3, 6815724), (4, 5111793), (6, 3407862), (9, 2271908), (12, 1703931), (18, 1135954), (36, 567977), (353, 57924), (706, 28962), (1059, 19308), (1412, 14481), (1609, 12708), (2118, 9654), (3177, 6436), (3218, 6354), (4236, 4827)]