21045216

素因数分解:

$2^5\times 3^1\times {\mathrm{257}}^1\times {\mathrm{853}}^1$

素因数の和:1123

約数の個数: 48

約数和(自身を含む): 55523664

約数和(自身を除く): 34478448

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 257, 514, 771, 853, 1028, 1542, 1706, 2056, 2559, 3084, 3412, 4112, 5118, 6168, 6824, 8224, 10236, 12336, 13648, 20472, 24672, 27296, 40944, 81888, 219221, 438442, 657663, 876884, 1315326, 1753768, 2630652, 3507536, 5261304, 7015072, 10522608, 21045216]

約数ペア:

[(1, 21045216), (2, 10522608), (3, 7015072), (4, 5261304), (6, 3507536), (8, 2630652), (12, 1753768), (16, 1315326), (24, 876884), (32, 657663), (48, 438442), (96, 219221), (257, 81888), (514, 40944), (771, 27296), (853, 24672), (1028, 20472), (1542, 13648), (1706, 12336), (2056, 10236), (2559, 8224), (3084, 6824), (3412, 6168), (4112, 5118)]