257687997

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{423133}}^1$

素因数の和:423172

約数の個数: 16

約数和(自身を含む): 406208640

約数和(自身を除く): 148520643

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 423133, 1269399, 2961931, 8885793, 12270857, 36812571, 85895999, 257687997]

約数ペア:

[(1, 257687997), (3, 85895999), (7, 36812571), (21, 12270857), (29, 8885793), (87, 2961931), (203, 1269399), (609, 423133)]