20178235

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3083}}^1$

素因数の和:3123

約数の個数: 32

約数和(自身を含む): 31974912

約数和(自身を除く): 11796677

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3083, 6545, 15415, 21581, 33913, 52411, 107905, 169565, 237391, 262055, 366877, 576521, 1186955, 1834385, 2882605, 4035647, 20178235]

約数ペア:

[(1, 20178235), (5, 4035647), (7, 2882605), (11, 1834385), (17, 1186955), (35, 576521), (55, 366877), (77, 262055), (85, 237391), (119, 169565), (187, 107905), (385, 52411), (595, 33913), (935, 21581), (1309, 15415), (3083, 6545)]