21268112

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:351

約数の個数: 40

約数和(自身を含む): 42393120

約数和(自身を除く): 21125008

約数列:

[1, 2, 4, 8, 16, 73, 131, 139, 146, 262, 278, 292, 524, 556, 584, 1048, 1112, 1168, 2096, 2224, 9563, 10147, 18209, 19126, 20294, 36418, 38252, 40588, 72836, 76504, 81176, 145672, 153008, 162352, 291344, 1329257, 2658514, 5317028, 10634056, 21268112]

約数ペア:

[(1, 21268112), (2, 10634056), (4, 5317028), (8, 2658514), (16, 1329257), (73, 291344), (131, 162352), (139, 153008), (146, 145672), (262, 81176), (278, 76504), (292, 72836), (524, 40588), (556, 38252), (584, 36418), (1048, 20294), (1112, 19126), (1168, 18209), (2096, 10147), (2224, 9563)]