21658136

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{977}}^1$

素因数の和:1163

約数の個数: 32

約数和(自身を含む): 43305840

約数和(自身を除く): 21647704

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 163, 326, 652, 977, 1304, 1954, 2771, 3908, 5542, 7816, 11084, 16609, 22168, 33218, 66436, 132872, 159251, 318502, 637004, 1274008, 2707267, 5414534, 10829068, 21658136]

約数ペア:

[(1, 21658136), (2, 10829068), (4, 5414534), (8, 2707267), (17, 1274008), (34, 637004), (68, 318502), (136, 159251), (163, 132872), (326, 66436), (652, 33218), (977, 22168), (1304, 16609), (1954, 11084), (2771, 7816), (3908, 5542)]