205307905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1\times {\mathrm{419}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 275788800

約数和(自身を除く): 70480895

約数列:

[1, 5, 11, 55, 59, 151, 295, 419, 649, 755, 1661, 2095, 3245, 4609, 8305, 8909, 23045, 24721, 44545, 63269, 97999, 123605, 271931, 316345, 489995, 695959, 1359655, 3479795, 3732871, 18664355, 41061581, 205307905]

約数ペア:

[(1, 205307905), (5, 41061581), (11, 18664355), (55, 3732871), (59, 3479795), (151, 1359655), (295, 695959), (419, 489995), (649, 316345), (755, 271931), (1661, 123605), (2095, 97999), (3245, 63269), (4609, 44545), (8305, 24721), (8909, 23045)]