64740025

素因数分解:

$5^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1289}}^1$

素因数の和:1354

約数の個数: 36

約数和(自身を含む): 95736060

約数和(自身を除く): 30996035

約数列:

[1, 5, 7, 25, 35, 41, 49, 175, 205, 245, 287, 1025, 1225, 1289, 1435, 2009, 6445, 7175, 9023, 10045, 32225, 45115, 50225, 52849, 63161, 225575, 264245, 315805, 369943, 1321225, 1579025, 1849715, 2589601, 9248575, 12948005, 64740025]

約数ペア:

[(1, 64740025), (5, 12948005), (7, 9248575), (25, 2589601), (35, 1849715), (41, 1579025), (49, 1321225), (175, 369943), (205, 315805), (245, 264245), (287, 225575), (1025, 63161), (1225, 52849), (1289, 50225), (1435, 45115), (2009, 32225), (6445, 10045), (7175, 9023)]