21354125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{773}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 30427488

約数和(自身を除く): 9073363

約数列:

[1, 5, 13, 17, 25, 65, 85, 125, 221, 325, 425, 773, 1105, 1625, 2125, 3865, 5525, 10049, 13141, 19325, 27625, 50245, 65705, 96625, 170833, 251225, 328525, 854165, 1256125, 1642625, 4270825, 21354125]

約数ペア:

[(1, 21354125), (5, 4270825), (13, 1642625), (17, 1256125), (25, 854165), (65, 328525), (85, 251225), (125, 170833), (221, 96625), (325, 65705), (425, 50245), (773, 27625), (1105, 19325), (1625, 13141), (2125, 10049), (3865, 5525)]