638384

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{2347}}^1$

素因数の和:2372

約数の個数: 20

約数和(自身を含む): 1310184

約数和(自身を除く): 671800

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 2347, 4694, 9388, 18776, 37552, 39899, 79798, 159596, 319192, 638384]

約数ペア:

[(1, 638384), (2, 319192), (4, 159596), (8, 79798), (16, 39899), (17, 37552), (34, 18776), (68, 9388), (136, 4694), (272, 2347)]