20423409

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 30159360

約数和(自身を除く): 9735951

約数列:

[1, 3, 17, 43, 51, 67, 129, 139, 201, 417, 731, 1139, 2193, 2363, 2881, 3417, 5977, 7089, 8643, 9313, 17931, 27939, 48977, 101609, 146931, 158321, 304827, 400459, 474963, 1201377, 6807803, 20423409]

約数ペア:

[(1, 20423409), (3, 6807803), (17, 1201377), (43, 474963), (51, 400459), (67, 304827), (129, 158321), (139, 146931), (201, 101609), (417, 48977), (731, 27939), (1139, 17931), (2193, 9313), (2363, 8643), (2881, 7089), (3417, 5977)]