261391864

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{9109}}^1$

素因数の和:9343

約数の個数: 32

約数和(自身を含む): 521456400

約数和(自身を除く): 260064536

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 211, 422, 844, 1688, 3587, 7174, 9109, 14348, 18218, 28696, 36436, 72872, 154853, 309706, 619412, 1238824, 1921999, 3843998, 7687996, 15375992, 32673983, 65347966, 130695932, 261391864]

約数ペア:

[(1, 261391864), (2, 130695932), (4, 65347966), (8, 32673983), (17, 15375992), (34, 7687996), (68, 3843998), (136, 1921999), (211, 1238824), (422, 619412), (844, 309706), (1688, 154853), (3587, 72872), (7174, 36436), (9109, 28696), (14348, 18218)]