28788487

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 37158912

約数和(自身を除く): 8370425

約数列:

[1, 7, 13, 47, 53, 91, 127, 329, 371, 611, 689, 889, 1651, 2491, 4277, 4823, 5969, 6731, 11557, 17437, 32383, 41783, 47117, 77597, 87503, 226681, 316357, 543179, 612521, 2214499, 4112641, 28788487]

約数ペア:

[(1, 28788487), (7, 4112641), (13, 2214499), (47, 612521), (53, 543179), (91, 316357), (127, 226681), (329, 87503), (371, 77597), (611, 47117), (689, 41783), (889, 32383), (1651, 17437), (2491, 11557), (4277, 6731), (4823, 5969)]