21297768

素因数分解:

$2^3\times 3^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 55296000

約数和(自身を除く): 33998232

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 47, 79, 94, 141, 158, 188, 237, 239, 282, 316, 376, 474, 478, 564, 632, 717, 948, 956, 1128, 1434, 1896, 1912, 2868, 3713, 5736, 7426, 11139, 11233, 14852, 18881, 22278, 22466, 29704, 33699, 37762, 44556, 44932, 56643, 67398, 75524, 89112, 89864, 113286, 134796, 151048, 226572, 269592, 453144, 887407, 1774814, 2662221, 3549628, 5324442, 7099256, 10648884, 21297768]

約数ペア:

[(1, 21297768), (2, 10648884), (3, 7099256), (4, 5324442), (6, 3549628), (8, 2662221), (12, 1774814), (24, 887407), (47, 453144), (79, 269592), (94, 226572), (141, 151048), (158, 134796), (188, 113286), (237, 89864), (239, 89112), (282, 75524), (316, 67398), (376, 56643), (474, 44932), (478, 44556), (564, 37762), (632, 33699), (717, 29704), (948, 22466), (956, 22278), (1128, 18881), (1434, 14852), (1896, 11233), (1912, 11139), (2868, 7426), (3713, 5736)]