19942880

素因数分解:

$2^5\times 5^1\times {\mathrm{124643}}^1$

素因数の和:124658

約数の個数: 24

約数和(自身を含む): 47115432

約数和(自身を除く): 27172552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124643, 249286, 498572, 623215, 997144, 1246430, 1994288, 2492860, 3988576, 4985720, 9971440, 19942880]

約数ペア:

[(1, 19942880), (2, 9971440), (4, 4985720), (5, 3988576), (8, 2492860), (10, 1994288), (16, 1246430), (20, 997144), (32, 623215), (40, 498572), (80, 249286), (160, 124643)]