19016991

素因数分解:

$3^3\times 7^1\times {\mathrm{239}}^1\times {\mathrm{421}}^1$

素因数の和:676

約数の個数: 32

約数和(自身を含む): 32409600

約数和(自身を除く): 13392609

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 239, 421, 717, 1263, 1673, 2151, 2947, 3789, 5019, 6453, 8841, 11367, 15057, 26523, 45171, 79569, 100619, 301857, 704333, 905571, 2112999, 2716713, 6338997, 19016991]

約数ペア:

[(1, 19016991), (3, 6338997), (7, 2716713), (9, 2112999), (21, 905571), (27, 704333), (63, 301857), (189, 100619), (239, 79569), (421, 45171), (717, 26523), (1263, 15057), (1673, 11367), (2151, 8841), (2947, 6453), (3789, 5019)]