21281024

素因数分解:

$2^8\times {\mathrm{97}}^1\times {\mathrm{857}}^1$

素因数の和:970

約数の個数: 36

約数和(自身を含む): 42966924

約数和(自身を除く): 21685900

約数列:

[1, 2, 4, 8, 16, 32, 64, 97, 128, 194, 256, 388, 776, 857, 1552, 1714, 3104, 3428, 6208, 6856, 12416, 13712, 24832, 27424, 54848, 83129, 109696, 166258, 219392, 332516, 665032, 1330064, 2660128, 5320256, 10640512, 21281024]

約数ペア:

[(1, 21281024), (2, 10640512), (4, 5320256), (8, 2660128), (16, 1330064), (32, 665032), (64, 332516), (97, 219392), (128, 166258), (194, 109696), (256, 83129), (388, 54848), (776, 27424), (857, 24832), (1552, 13712), (1714, 12416), (3104, 6856), (3428, 6208)]