20321860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1663}}^1$

素因数の和:1732

約数の個数: 48

約数和(自身を含む): 46964736

約数和(自身を除く): 26642876

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1663, 2444, 3055, 3326, 6110, 6652, 8315, 12220, 16630, 21619, 33260, 43238, 78161, 86476, 108095, 156322, 216190, 312644, 390805, 432380, 781610, 1016093, 1563220, 2032186, 4064372, 5080465, 10160930, 20321860]

約数ペア:

[(1, 20321860), (2, 10160930), (4, 5080465), (5, 4064372), (10, 2032186), (13, 1563220), (20, 1016093), (26, 781610), (47, 432380), (52, 390805), (65, 312644), (94, 216190), (130, 156322), (188, 108095), (235, 86476), (260, 78161), (470, 43238), (611, 33260), (940, 21619), (1222, 16630), (1663, 12220), (2444, 8315), (3055, 6652), (3326, 6110)]