12721384

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{122321}}^1$

素因数の和:122340

約数の個数: 16

約数和(自身を含む): 25687620

約数和(自身を除く): 12966236

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 122321, 244642, 489284, 978568, 1590173, 3180346, 6360692, 12721384]

約数ペア:

[(1, 12721384), (2, 6360692), (4, 3180346), (8, 1590173), (13, 978568), (26, 489284), (52, 244642), (104, 122321)]