20853469

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1723}}^1$

素因数の和:1769

約数の個数: 24

約数和(自身を含む): 27515040

約数和(自身を除く): 6661571

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 637, 931, 1723, 1729, 12061, 12103, 22399, 32737, 84427, 156793, 229159, 425581, 1097551, 1604113, 2979067, 20853469]

約数ペア:

[(1, 20853469), (7, 2979067), (13, 1604113), (19, 1097551), (49, 425581), (91, 229159), (133, 156793), (247, 84427), (637, 32737), (931, 22399), (1723, 12103), (1729, 12061)]