21490218078

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{511671859}}^1$

素因数の和:511671871

約数の個数: 16

約数和(自身を含む): 49120498560

約数和(自身を除く): 27630280482

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 511671859, 1023343718, 1535015577, 3070031154, 3581703013, 7163406026, 10745109039, 21490218078]

約数ペア:

[(1, 21490218078), (2, 10745109039), (3, 7163406026), (6, 3581703013), (7, 3070031154), (14, 1535015577), (21, 1023343718), (42, 511671859)]