20490275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{941}}^1$

素因数の和:1031

約数の個数: 24

約数和(自身を含む): 27800304

約数和(自身を除く): 7310029

約数列:

[1, 5, 13, 25, 65, 67, 325, 335, 871, 941, 1675, 4355, 4705, 12233, 21775, 23525, 61165, 63047, 305825, 315235, 819611, 1576175, 4098055, 20490275]

約数ペア:

[(1, 20490275), (5, 4098055), (13, 1576175), (25, 819611), (65, 315235), (67, 305825), (325, 63047), (335, 61165), (871, 23525), (941, 21775), (1675, 12233), (4355, 4705)]