21065880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{15959}}^1$

素因数の和:15984

約数の個数: 64

約数和(自身を含む): 68947200

約数和(自身を除く): 47881320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 15959, 31918, 47877, 63836, 79795, 95754, 127672, 159590, 175549, 191508, 239385, 319180, 351098, 383016, 478770, 526647, 638360, 702196, 877745, 957540, 1053294, 1404392, 1755490, 1915080, 2106588, 2633235, 3510980, 4213176, 5266470, 7021960, 10532940, 21065880]

約数ペア:

[(1, 21065880), (2, 10532940), (3, 7021960), (4, 5266470), (5, 4213176), (6, 3510980), (8, 2633235), (10, 2106588), (11, 1915080), (12, 1755490), (15, 1404392), (20, 1053294), (22, 957540), (24, 877745), (30, 702196), (33, 638360), (40, 526647), (44, 478770), (55, 383016), (60, 351098), (66, 319180), (88, 239385), (110, 191508), (120, 175549), (132, 159590), (165, 127672), (220, 95754), (264, 79795), (330, 63836), (440, 47877), (660, 31918), (1320, 15959)]