21159568

素因数分解:

$2^4\times {\mathrm{167}}^1\times {\mathrm{7919}}^1$

素因数の和:8094

約数の個数: 20

約数和(自身を含む): 41247360

約数和(自身を除く): 20087792

約数列:

[1, 2, 4, 8, 16, 167, 334, 668, 1336, 2672, 7919, 15838, 31676, 63352, 126704, 1322473, 2644946, 5289892, 10579784, 21159568]

約数ペア:

[(1, 21159568), (2, 10579784), (4, 5289892), (8, 2644946), (16, 1322473), (167, 126704), (334, 63352), (668, 31676), (1336, 15838), (2672, 7919)]