16521155

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 24071040

約数和(自身を除く): 7549885

約数列:

[1, 5, 7, 29, 35, 41, 145, 203, 205, 287, 397, 1015, 1189, 1435, 1985, 2779, 5945, 8323, 11513, 13895, 16277, 41615, 57565, 80591, 81385, 113939, 402955, 472033, 569695, 2360165, 3304231, 16521155]

約数ペア:

[(1, 16521155), (5, 3304231), (7, 2360165), (29, 569695), (35, 472033), (41, 402955), (145, 113939), (203, 81385), (205, 80591), (287, 57565), (397, 41615), (1015, 16277), (1189, 13895), (1435, 11513), (1985, 8323), (2779, 5945)]