20625241

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 27238400

約数和(自身を除く): 6613159

約数列:

[1, 7, 13, 19, 79, 91, 133, 151, 247, 553, 1027, 1057, 1501, 1729, 1963, 2869, 7189, 10507, 11929, 13741, 19513, 20083, 37297, 83503, 136591, 155077, 226651, 261079, 1085539, 1586557, 2946463, 20625241]

約数ペア:

[(1, 20625241), (7, 2946463), (13, 1586557), (19, 1085539), (79, 261079), (91, 226651), (133, 155077), (151, 136591), (247, 83503), (553, 37297), (1027, 20083), (1057, 19513), (1501, 13741), (1729, 11929), (1963, 10507), (2869, 7189)]