21488940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10853}}^1$

素因数の和:10879

約数の個数: 72

約数和(自身を含む): 71115408

約数和(自身を除く): 49626468

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10853, 21706, 32559, 43412, 54265, 65118, 97677, 108530, 119383, 130236, 162795, 195354, 217060, 238766, 325590, 358149, 390708, 477532, 488385, 596915, 651180, 716298, 976770, 1074447, 1193830, 1432596, 1790745, 1953540, 2148894, 2387660, 3581490, 4297788, 5372235, 7162980, 10744470, 21488940]

約数ペア:

[(1, 21488940), (2, 10744470), (3, 7162980), (4, 5372235), (5, 4297788), (6, 3581490), (9, 2387660), (10, 2148894), (11, 1953540), (12, 1790745), (15, 1432596), (18, 1193830), (20, 1074447), (22, 976770), (30, 716298), (33, 651180), (36, 596915), (44, 488385), (45, 477532), (55, 390708), (60, 358149), (66, 325590), (90, 238766), (99, 217060), (110, 195354), (132, 162795), (165, 130236), (180, 119383), (198, 108530), (220, 97677), (330, 65118), (396, 54265), (495, 43412), (660, 32559), (990, 21706), (1980, 10853)]