257431120

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{16673}}^1$

素因数の和:16879

約数の個数: 40

約数和(自身を含む): 601664616

約数和(自身を除く): 344233496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1544, 1930, 3088, 3860, 7720, 15440, 16673, 33346, 66692, 83365, 133384, 166730, 266768, 333460, 666920, 1333840, 3217889, 6435778, 12871556, 16089445, 25743112, 32178890, 51486224, 64357780, 128715560, 257431120]

約数ペア:

[(1, 257431120), (2, 128715560), (4, 64357780), (5, 51486224), (8, 32178890), (10, 25743112), (16, 16089445), (20, 12871556), (40, 6435778), (80, 3217889), (193, 1333840), (386, 666920), (772, 333460), (965, 266768), (1544, 166730), (1930, 133384), (3088, 83365), (3860, 66692), (7720, 33346), (15440, 16673)]