21126273

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13781}}^1$

素因数の和:13864

約数の個数: 16

約数和(自身を含む): 32635776

約数和(自身を除く): 11509503

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13781, 41343, 96467, 289401, 1006013, 3018039, 7042091, 21126273]

約数ペア:

[(1, 21126273), (3, 7042091), (7, 3018039), (21, 1006013), (73, 289401), (219, 96467), (511, 41343), (1533, 13781)]