20457927

素因数分解:

$3^6\times 7^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:255

約数の個数: 56

約数和(自身を含む): 37074560

約数和(自身を除く): 16616633

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 211, 243, 399, 513, 567, 633, 729, 1197, 1477, 1539, 1701, 1899, 3591, 4009, 4431, 4617, 5103, 5697, 10773, 12027, 13293, 13851, 17091, 28063, 32319, 36081, 39879, 51273, 84189, 96957, 108243, 119637, 153819, 252567, 324729, 358911, 757701, 974187, 1076733, 2273103, 2922561, 6819309, 20457927]

約数ペア:

[(1, 20457927), (3, 6819309), (7, 2922561), (9, 2273103), (19, 1076733), (21, 974187), (27, 757701), (57, 358911), (63, 324729), (81, 252567), (133, 153819), (171, 119637), (189, 108243), (211, 96957), (243, 84189), (399, 51273), (513, 39879), (567, 36081), (633, 32319), (729, 28063), (1197, 17091), (1477, 13851), (1539, 13293), (1701, 12027), (1899, 10773), (3591, 5697), (4009, 5103), (4431, 4617)]