20989384

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201821}}^1$

素因数の和:201840

約数の個数: 16

約数和(自身を含む): 42382620

約数和(自身を除く): 21393236

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201821, 403642, 807284, 1614568, 2623673, 5247346, 10494692, 20989384]

約数ペア:

[(1, 20989384), (2, 10494692), (4, 5247346), (8, 2623673), (13, 1614568), (26, 807284), (52, 403642), (104, 201821)]