21617168

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1063}}^1$

素因数の和:1143

約数の個数: 40

約数和(自身を含む): 44330496

約数和(自身を除く): 22713328

約数列:

[1, 2, 4, 8, 16, 31, 41, 62, 82, 124, 164, 248, 328, 496, 656, 1063, 1271, 2126, 2542, 4252, 5084, 8504, 10168, 17008, 20336, 32953, 43583, 65906, 87166, 131812, 174332, 263624, 348664, 527248, 697328, 1351073, 2702146, 5404292, 10808584, 21617168]

約数ペア:

[(1, 21617168), (2, 10808584), (4, 5404292), (8, 2702146), (16, 1351073), (31, 697328), (41, 527248), (62, 348664), (82, 263624), (124, 174332), (164, 131812), (248, 87166), (328, 65906), (496, 43583), (656, 32953), (1063, 20336), (1271, 17008), (2126, 10168), (2542, 8504), (4252, 5084)]