21911085

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{523}}^1$

素因数の和:567

約数の個数: 72

約数和(自身を含む): 46594080

約数和(自身を除く): 24682995

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 49, 57, 63, 95, 105, 133, 147, 171, 245, 285, 315, 399, 441, 523, 665, 735, 855, 931, 1197, 1569, 1995, 2205, 2615, 2793, 3661, 4655, 4707, 5985, 7845, 8379, 9937, 10983, 13965, 18305, 23535, 25627, 29811, 32949, 41895, 49685, 54915, 69559, 76881, 89433, 128135, 149055, 164745, 208677, 230643, 347795, 384405, 447165, 486913, 626031, 1043385, 1153215, 1460739, 2434565, 3130155, 4382217, 7303695, 21911085]

約数ペア:

[(1, 21911085), (3, 7303695), (5, 4382217), (7, 3130155), (9, 2434565), (15, 1460739), (19, 1153215), (21, 1043385), (35, 626031), (45, 486913), (49, 447165), (57, 384405), (63, 347795), (95, 230643), (105, 208677), (133, 164745), (147, 149055), (171, 128135), (245, 89433), (285, 76881), (315, 69559), (399, 54915), (441, 49685), (523, 41895), (665, 32949), (735, 29811), (855, 25627), (931, 23535), (1197, 18305), (1569, 13965), (1995, 10983), (2205, 9937), (2615, 8379), (2793, 7845), (3661, 5985), (4655, 4707)]