19864521

素因数分解:

$3^7\times {\mathrm{31}}^1\times {\mathrm{293}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 30858240

約数和(自身を除く): 10993719

約数列:

[1, 3, 9, 27, 31, 81, 93, 243, 279, 293, 729, 837, 879, 2187, 2511, 2637, 7533, 7911, 9083, 22599, 23733, 27249, 67797, 71199, 81747, 213597, 245241, 640791, 735723, 2207169, 6621507, 19864521]

約数ペア:

[(1, 19864521), (3, 6621507), (9, 2207169), (27, 735723), (31, 640791), (81, 245241), (93, 213597), (243, 81747), (279, 71199), (293, 67797), (729, 27249), (837, 23733), (879, 22599), (2187, 9083), (2511, 7911), (2637, 7533)]