15400025

素因数分解:

$5^2\times {\mathrm{31}}^2\times {\mathrm{641}}^1$

素因数の和:713

約数の個数: 18

約数和(自身を含む): 19762686

約数和(自身を除く): 4362661

約数列:

[1, 5, 25, 31, 155, 641, 775, 961, 3205, 4805, 16025, 19871, 24025, 99355, 496775, 616001, 3080005, 15400025]

約数ペア:

[(1, 15400025), (5, 3080005), (25, 616001), (31, 496775), (155, 99355), (641, 24025), (775, 19871), (961, 16025), (3205, 4805)]