21571935

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{983}}^1$

素因数の和:1028

約数の個数: 64

約数和(自身を含む): 45342720

約数和(自身を除く): 23770785

約数列:

[1, 3, 5, 7, 11, 15, 19, 21, 33, 35, 55, 57, 77, 95, 105, 133, 165, 209, 231, 285, 385, 399, 627, 665, 983, 1045, 1155, 1463, 1995, 2949, 3135, 4389, 4915, 6881, 7315, 10813, 14745, 18677, 20643, 21945, 32439, 34405, 54065, 56031, 75691, 93385, 103215, 130739, 162195, 205447, 227073, 280155, 378455, 392217, 616341, 653695, 1027235, 1135365, 1438129, 1961085, 3081705, 4314387, 7190645, 21571935]

約数ペア:

[(1, 21571935), (3, 7190645), (5, 4314387), (7, 3081705), (11, 1961085), (15, 1438129), (19, 1135365), (21, 1027235), (33, 653695), (35, 616341), (55, 392217), (57, 378455), (77, 280155), (95, 227073), (105, 205447), (133, 162195), (165, 130739), (209, 103215), (231, 93385), (285, 75691), (385, 56031), (399, 54065), (627, 34405), (665, 32439), (983, 21945), (1045, 20643), (1155, 18677), (1463, 14745), (1995, 10813), (2949, 7315), (3135, 6881), (4389, 4915)]