1691991

素因数分解:

$3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 2830464

約数和(自身を除く): 1138473

約数列:

[1, 3, 7, 9, 21, 63, 107, 251, 321, 749, 753, 963, 1757, 2247, 2259, 5271, 6741, 15813, 26857, 80571, 187999, 241713, 563997, 1691991]

約数ペア:

[(1, 1691991), (3, 563997), (7, 241713), (9, 187999), (21, 80571), (63, 26857), (107, 15813), (251, 6741), (321, 5271), (749, 2259), (753, 2247), (963, 1757)]