678740045

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1\times {\mathrm{281}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 875792736

約数和(自身を除く): 197052691

約数列:

[1, 5, 17, 85, 157, 181, 281, 785, 905, 1405, 2669, 3077, 4777, 13345, 15385, 23885, 28417, 44117, 50861, 142085, 220585, 254305, 483089, 749989, 864637, 2415445, 3749945, 4323185, 7985177, 39925885, 135748009, 678740045]

約数ペア:

[(1, 678740045), (5, 135748009), (17, 39925885), (85, 7985177), (157, 4323185), (181, 3749945), (281, 2415445), (785, 864637), (905, 749989), (1405, 483089), (2669, 254305), (3077, 220585), (4777, 142085), (13345, 50861), (15385, 44117), (23885, 28417)]