19665104

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{283}}^1$

素因数の和:435

約数の個数: 40

約数和(自身を含む): 39512352

約数和(自身を除く): 19847248

約数列:

[1, 2, 4, 8, 16, 43, 86, 101, 172, 202, 283, 344, 404, 566, 688, 808, 1132, 1616, 2264, 4343, 4528, 8686, 12169, 17372, 24338, 28583, 34744, 48676, 57166, 69488, 97352, 114332, 194704, 228664, 457328, 1229069, 2458138, 4916276, 9832552, 19665104]

約数ペア:

[(1, 19665104), (2, 9832552), (4, 4916276), (8, 2458138), (16, 1229069), (43, 457328), (86, 228664), (101, 194704), (172, 114332), (202, 97352), (283, 69488), (344, 57166), (404, 48676), (566, 34744), (688, 28583), (808, 24338), (1132, 17372), (1616, 12169), (2264, 8686), (4343, 4528)]