20505417

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1\times {\mathrm{353}}^1$

素因数の和:457

約数の個数: 24

約数和(自身を含む): 29560416

約数和(自身を除く): 9054999

約数列:

[1, 3, 17, 51, 67, 201, 289, 353, 867, 1059, 1139, 3417, 6001, 18003, 19363, 23651, 58089, 70953, 102017, 306051, 402067, 1206201, 6835139, 20505417]

約数ペア:

[(1, 20505417), (3, 6835139), (17, 1206201), (51, 402067), (67, 306051), (201, 102017), (289, 70953), (353, 58089), (867, 23651), (1059, 19363), (1139, 18003), (3417, 6001)]