19901871

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{3793}}^1$

素因数の和:3863

約数の個数: 24

約数和(自身を含む): 31960656

約数和(自身を除く): 12058785

約数列:

[1, 3, 9, 11, 33, 53, 99, 159, 477, 583, 1749, 3793, 5247, 11379, 34137, 41723, 125169, 201029, 375507, 603087, 1809261, 2211319, 6633957, 19901871]

約数ペア:

[(1, 19901871), (3, 6633957), (9, 2211319), (11, 1809261), (33, 603087), (53, 375507), (99, 201029), (159, 125169), (477, 41723), (583, 34137), (1749, 11379), (3793, 5247)]