65217025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 90787840

約数和(自身を除く): 25570815

約数列:

[1, 5, 19, 25, 31, 43, 95, 103, 155, 215, 475, 515, 589, 775, 817, 1075, 1333, 1957, 2575, 2945, 3193, 4085, 4429, 6665, 9785, 14725, 15965, 20425, 22145, 25327, 33325, 48925, 60667, 79825, 84151, 110725, 126635, 137299, 303335, 420755, 633175, 686495, 1516675, 2103775, 2608681, 3432475, 13043405, 65217025]

約数ペア:

[(1, 65217025), (5, 13043405), (19, 3432475), (25, 2608681), (31, 2103775), (43, 1516675), (95, 686495), (103, 633175), (155, 420755), (215, 303335), (475, 137299), (515, 126635), (589, 110725), (775, 84151), (817, 79825), (1075, 60667), (1333, 48925), (1957, 33325), (2575, 25327), (2945, 22145), (3193, 20425), (4085, 15965), (4429, 14725), (6665, 9785)]