20172295

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 28848960

約数和(自身を除く): 8676665

約数列:

[1, 5, 11, 13, 55, 65, 89, 143, 317, 445, 715, 979, 1157, 1585, 3487, 4121, 4895, 5785, 12727, 17435, 20605, 28213, 45331, 63635, 141065, 226655, 310343, 366769, 1551715, 1833845, 4034459, 20172295]

約数ペア:

[(1, 20172295), (5, 4034459), (11, 1833845), (13, 1551715), (55, 366769), (65, 310343), (89, 226655), (143, 141065), (317, 63635), (445, 45331), (715, 28213), (979, 20605), (1157, 17435), (1585, 12727), (3487, 5785), (4121, 4895)]