21016208

素因数分解:

$2^4\times {\mathrm{61}}^2\times {\mathrm{353}}^1$

素因数の和:483

約数の個数: 30

約数和(自身を含む): 41514642

約数和(自身を除く): 20498434

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 353, 488, 706, 976, 1412, 2824, 3721, 5648, 7442, 14884, 21533, 29768, 43066, 59536, 86132, 172264, 344528, 1313513, 2627026, 5254052, 10508104, 21016208]

約数ペア:

[(1, 21016208), (2, 10508104), (4, 5254052), (8, 2627026), (16, 1313513), (61, 344528), (122, 172264), (244, 86132), (353, 59536), (488, 43066), (706, 29768), (976, 21533), (1412, 14884), (2824, 7442), (3721, 5648)]