20821860

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12853}}^1$

素因数の和:12874

約数の個数: 60

約数和(自身を含む): 65324028

約数和(自身を除く): 44502168

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12853, 25706, 38559, 51412, 64265, 77118, 115677, 128530, 154236, 192795, 231354, 257060, 347031, 385590, 462708, 578385, 694062, 771180, 1041093, 1156770, 1388124, 1735155, 2082186, 2313540, 3470310, 4164372, 5205465, 6940620, 10410930, 20821860]

約数ペア:

[(1, 20821860), (2, 10410930), (3, 6940620), (4, 5205465), (5, 4164372), (6, 3470310), (9, 2313540), (10, 2082186), (12, 1735155), (15, 1388124), (18, 1156770), (20, 1041093), (27, 771180), (30, 694062), (36, 578385), (45, 462708), (54, 385590), (60, 347031), (81, 257060), (90, 231354), (108, 192795), (135, 154236), (162, 128530), (180, 115677), (270, 77118), (324, 64265), (405, 51412), (540, 38559), (810, 25706), (1620, 12853)]