21248096

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 44770320

約数和(自身を除く): 23522224

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 139, 272, 278, 281, 544, 556, 562, 1112, 1124, 2224, 2248, 2363, 4448, 4496, 4726, 4777, 8992, 9452, 9554, 18904, 19108, 37808, 38216, 39059, 75616, 76432, 78118, 152864, 156236, 312472, 624944, 664003, 1249888, 1328006, 2656012, 5312024, 10624048, 21248096]

約数ペア:

[(1, 21248096), (2, 10624048), (4, 5312024), (8, 2656012), (16, 1328006), (17, 1249888), (32, 664003), (34, 624944), (68, 312472), (136, 156236), (139, 152864), (272, 78118), (278, 76432), (281, 75616), (544, 39059), (556, 38216), (562, 37808), (1112, 19108), (1124, 18904), (2224, 9554), (2248, 9452), (2363, 8992), (4448, 4777), (4496, 4726)]