19641993

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{3259}}^1$

素因数の和:3317

約数の個数: 24

約数和(自身を含む): 31217760

約数和(自身を除く): 11575767

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 861, 2009, 3259, 6027, 9777, 22813, 68439, 133619, 159691, 400857, 479073, 935333, 2805999, 6547331, 19641993]

約数ペア:

[(1, 19641993), (3, 6547331), (7, 2805999), (21, 935333), (41, 479073), (49, 400857), (123, 159691), (147, 133619), (287, 68439), (861, 22813), (2009, 9777), (3259, 6027)]