30840257

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:381

約数の個数: 24

約数和(自身を含む): 37647360

約数和(自身を除く): 6807103

約数列:

[1, 7, 31, 49, 79, 217, 257, 553, 1519, 1799, 2449, 3871, 7967, 12593, 17143, 20303, 55769, 120001, 142121, 390383, 629393, 994847, 4405751, 30840257]

約数ペア:

[(1, 30840257), (7, 4405751), (31, 994847), (49, 629393), (79, 390383), (217, 142121), (257, 120001), (553, 55769), (1519, 20303), (1799, 17143), (2449, 12593), (3871, 7967)]