20099975

素因数分解:

$5^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{347}}^1$

素因数の和:695

約数の個数: 24

約数和(自身を含む): 28652928

約数和(自身を除く): 8552953

約数列:

[1, 5, 7, 25, 35, 175, 331, 347, 1655, 1735, 2317, 2429, 8275, 8675, 11585, 12145, 57925, 60725, 114857, 574285, 803999, 2871425, 4019995, 20099975]

約数ペア:

[(1, 20099975), (5, 4019995), (7, 2871425), (25, 803999), (35, 574285), (175, 114857), (331, 60725), (347, 57925), (1655, 12145), (1735, 11585), (2317, 8675), (2429, 8275)]