20407653

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5683}}^1$

素因数の和:5718

約数の個数: 32

約数和(自身を含む): 36377600

約数和(自身を除く): 15969947

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 399, 513, 1197, 3591, 5683, 17049, 39781, 51147, 107977, 119343, 153441, 323931, 358029, 755839, 971793, 1074087, 2267517, 2915379, 6802551, 20407653]

約数ペア:

[(1, 20407653), (3, 6802551), (7, 2915379), (9, 2267517), (19, 1074087), (21, 971793), (27, 755839), (57, 358029), (63, 323931), (133, 153441), (171, 119343), (189, 107977), (399, 51147), (513, 39781), (1197, 17049), (3591, 5683)]