18764921

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{433}}^1$

素因数の和:632

約数の個数: 16

約数和(自身を含む): 22165248

約数和(自身を除く): 3400327

約数列:

[1, 7, 41, 151, 287, 433, 1057, 3031, 6191, 17753, 43337, 65383, 124271, 457681, 2680703, 18764921]

約数ペア:

[(1, 18764921), (7, 2680703), (41, 457681), (151, 124271), (287, 65383), (433, 43337), (1057, 17753), (3031, 6191)]