258889384

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{2489321}}^1$

素因数の和:2489340

約数の個数: 16

約数和(自身を含む): 522757620

約数和(自身を除く): 263868236

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 2489321, 4978642, 9957284, 19914568, 32361173, 64722346, 129444692, 258889384]

約数ペア:

[(1, 258889384), (2, 129444692), (4, 64722346), (8, 32361173), (13, 19914568), (26, 9957284), (52, 4978642), (104, 2489321)]