66421900

素因数分解:

$2^2\times 5^2\times {\mathrm{643}}^1\times {\mathrm{1033}}^1$

素因数の和:1690

約数の個数: 36

約数和(自身を含む): 144499432

約数和(自身を除く): 78077532

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 643, 1033, 1286, 2066, 2572, 3215, 4132, 5165, 6430, 10330, 12860, 16075, 20660, 25825, 32150, 51650, 64300, 103300, 664219, 1328438, 2656876, 3321095, 6642190, 13284380, 16605475, 33210950, 66421900]

約数ペア:

[(1, 66421900), (2, 33210950), (4, 16605475), (5, 13284380), (10, 6642190), (20, 3321095), (25, 2656876), (50, 1328438), (100, 664219), (643, 103300), (1033, 64300), (1286, 51650), (2066, 32150), (2572, 25825), (3215, 20660), (4132, 16075), (5165, 12860), (6430, 10330)]