21507290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2719}}^1$

素因数の和:2846

約数の個数: 32

約数和(自身を含む): 44651520

約数和(自身を除く): 23144230

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 113, 226, 565, 791, 1130, 1582, 2719, 3955, 5438, 7910, 13595, 19033, 27190, 38066, 95165, 190330, 307247, 614494, 1536235, 2150729, 3072470, 4301458, 10753645, 21507290]

約数ペア:

[(1, 21507290), (2, 10753645), (5, 4301458), (7, 3072470), (10, 2150729), (14, 1536235), (35, 614494), (70, 307247), (113, 190330), (226, 95165), (565, 38066), (791, 27190), (1130, 19033), (1582, 13595), (2719, 7910), (3955, 5438)]