20313261

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:295

約数の個数: 40

約数和(自身を含む): 32582880

約数和(自身を除く): 12269619

約数列:

[1, 3, 9, 19, 27, 57, 67, 81, 171, 197, 201, 513, 591, 603, 1273, 1539, 1773, 1809, 3743, 3819, 5319, 5427, 11229, 11457, 13199, 15957, 33687, 34371, 39597, 101061, 103113, 118791, 250781, 303183, 356373, 752343, 1069119, 2257029, 6771087, 20313261]

約数ペア:

[(1, 20313261), (3, 6771087), (9, 2257029), (19, 1069119), (27, 752343), (57, 356373), (67, 303183), (81, 250781), (171, 118791), (197, 103113), (201, 101061), (513, 39597), (591, 34371), (603, 33687), (1273, 15957), (1539, 13199), (1773, 11457), (1809, 11229), (3743, 5427), (3819, 5319)]