21054864

素因数分解:

$2^4\times 3^1\times {\mathrm{43}}^1\times {\mathrm{101}}^2$

素因数の和:256

約数の個数: 60

約数和(自身を含む): 56213168

約数和(自身を除く): 35158304

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 43, 48, 86, 101, 129, 172, 202, 258, 303, 344, 404, 516, 606, 688, 808, 1032, 1212, 1616, 2064, 2424, 4343, 4848, 8686, 10201, 13029, 17372, 20402, 26058, 30603, 34744, 40804, 52116, 61206, 69488, 81608, 104232, 122412, 163216, 208464, 244824, 438643, 489648, 877286, 1315929, 1754572, 2631858, 3509144, 5263716, 7018288, 10527432, 21054864]

約数ペア:

[(1, 21054864), (2, 10527432), (3, 7018288), (4, 5263716), (6, 3509144), (8, 2631858), (12, 1754572), (16, 1315929), (24, 877286), (43, 489648), (48, 438643), (86, 244824), (101, 208464), (129, 163216), (172, 122412), (202, 104232), (258, 81608), (303, 69488), (344, 61206), (404, 52116), (516, 40804), (606, 34744), (688, 30603), (808, 26058), (1032, 20402), (1212, 17372), (1616, 13029), (2064, 10201), (2424, 8686), (4343, 4848)]