64642075

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:456

約数の個数: 36

約数和(自身を含む): 89079120

約数和(自身を除く): 24437045

約数列:

[1, 5, 17, 23, 25, 85, 115, 289, 389, 391, 425, 575, 1445, 1945, 1955, 6613, 6647, 7225, 8947, 9725, 9775, 33065, 33235, 44735, 112421, 152099, 165325, 166175, 223675, 562105, 760495, 2585683, 2810525, 3802475, 12928415, 64642075]

約数ペア:

[(1, 64642075), (5, 12928415), (17, 3802475), (23, 2810525), (25, 2585683), (85, 760495), (115, 562105), (289, 223675), (389, 166175), (391, 165325), (425, 152099), (575, 112421), (1445, 44735), (1945, 33235), (1955, 33065), (6613, 9775), (6647, 9725), (7225, 8947)]