19914417

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5231}}^1$

素因数の和:5290

約数の個数: 20

約数和(自身を含む): 30387456

約数和(自身を除く): 10473039

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5231, 15693, 47079, 141237, 245857, 423711, 737571, 2212713, 6638139, 19914417]

約数ペア:

[(1, 19914417), (3, 6638139), (9, 2212713), (27, 737571), (47, 423711), (81, 245857), (141, 141237), (423, 47079), (1269, 15693), (3807, 5231)]