20213473

素因数分解:

$7^1\times {\mathrm{19}}^3\times {\mathrm{421}}^1$

素因数の和:485

約数の個数: 16

約数和(自身を含む): 24442240

約数和(自身を除く): 4228767

約数列:

[1, 7, 19, 133, 361, 421, 2527, 2947, 6859, 7999, 48013, 55993, 151981, 1063867, 2887639, 20213473]

約数ペア:

[(1, 20213473), (7, 2887639), (19, 1063867), (133, 151981), (361, 55993), (421, 48013), (2527, 7999), (2947, 6859)]