21729008

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10211}}^1$

素因数の和:10245

約数の個数: 40

約数和(自身を含む): 50651520

約数和(自身を除く): 28922512

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 10211, 20422, 40844, 71477, 81688, 142954, 163376, 194009, 285908, 388018, 571816, 776036, 1143632, 1358063, 1552072, 2716126, 3104144, 5432252, 10864504, 21729008]

約数ペア:

[(1, 21729008), (2, 10864504), (4, 5432252), (7, 3104144), (8, 2716126), (14, 1552072), (16, 1358063), (19, 1143632), (28, 776036), (38, 571816), (56, 388018), (76, 285908), (112, 194009), (133, 163376), (152, 142954), (266, 81688), (304, 71477), (532, 40844), (1064, 20422), (2128, 10211)]