21201747

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{21481}}^1$

素因数の和:21538

約数の個数: 16

約数和(自身を含む): 32996352

約数和(自身を除く): 11794605

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 21481, 64443, 150367, 451101, 1009607, 3028821, 7067249, 21201747]

約数ペア:

[(1, 21201747), (3, 7067249), (7, 3028821), (21, 1009607), (47, 451101), (141, 150367), (329, 64443), (987, 21481)]