71724989

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 90326016

約数和(自身を除く): 18601027

約数列:

[1, 7, 17, 43, 107, 119, 131, 301, 731, 749, 917, 1819, 2227, 4601, 5117, 5633, 12733, 14017, 15589, 32207, 39431, 78217, 95761, 98119, 238289, 547519, 602731, 670327, 1668023, 4219117, 10246427, 71724989]

約数ペア:

[(1, 71724989), (7, 10246427), (17, 4219117), (43, 1668023), (107, 670327), (119, 602731), (131, 547519), (301, 238289), (731, 98119), (749, 95761), (917, 78217), (1819, 39431), (2227, 32207), (4601, 15589), (5117, 14017), (5633, 12733)]