21290374

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80039}}^1$

素因数の和:80067

約数の個数: 16

約数和(自身を含む): 38419200

約数和(自身を除く): 17128826

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80039, 160078, 560273, 1120546, 1520741, 3041482, 10645187, 21290374]

約数ペア:

[(1, 21290374), (2, 10645187), (7, 3041482), (14, 1520741), (19, 1120546), (38, 560273), (133, 160078), (266, 80039)]