18880869

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{21929}}^1$

素因数の和:21980

約数の個数: 16

約数和(自身を含む): 29473920

約数和(自身を除く): 10593051

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 21929, 65787, 153503, 460509, 899089, 2697267, 6293623, 18880869]

約数ペア:

[(1, 18880869), (3, 6293623), (7, 2697267), (21, 899089), (41, 460509), (123, 153503), (287, 65787), (861, 21929)]