19977237

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 34864128

約数和(自身を除く): 14886891

約数列:

[1, 3, 7, 9, 21, 31, 53, 63, 93, 159, 193, 217, 279, 371, 477, 579, 651, 1113, 1351, 1643, 1737, 1953, 3339, 4053, 4929, 5983, 10229, 11501, 12159, 14787, 17949, 30687, 34503, 41881, 53847, 71603, 92061, 103509, 125643, 214809, 317099, 376929, 644427, 951297, 2219693, 2853891, 6659079, 19977237]

約数ペア:

[(1, 19977237), (3, 6659079), (7, 2853891), (9, 2219693), (21, 951297), (31, 644427), (53, 376929), (63, 317099), (93, 214809), (159, 125643), (193, 103509), (217, 92061), (279, 71603), (371, 53847), (477, 41881), (579, 34503), (651, 30687), (1113, 17949), (1351, 14787), (1643, 12159), (1737, 11501), (1953, 10229), (3339, 5983), (4053, 4929)]