20591725

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{563}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 33569280

約数和(自身を除く): 12977555

約数列:

[1, 5, 7, 11, 19, 25, 35, 55, 77, 95, 133, 175, 209, 275, 385, 475, 563, 665, 1045, 1463, 1925, 2815, 3325, 3941, 5225, 6193, 7315, 10697, 14075, 19705, 30965, 36575, 43351, 53485, 74879, 98525, 117667, 154825, 216755, 267425, 374395, 588335, 823669, 1083775, 1871975, 2941675, 4118345, 20591725]

約数ペア:

[(1, 20591725), (5, 4118345), (7, 2941675), (11, 1871975), (19, 1083775), (25, 823669), (35, 588335), (55, 374395), (77, 267425), (95, 216755), (133, 154825), (175, 117667), (209, 98525), (275, 74879), (385, 53485), (475, 43351), (563, 36575), (665, 30965), (1045, 19705), (1463, 14075), (1925, 10697), (2815, 7315), (3325, 6193), (3941, 5225)]