21006898

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:378

約数の個数: 32

約数和(自身を含む): 35754048

約数和(自身を除く): 14747150

約数列:

[1, 2, 11, 22, 37, 74, 131, 197, 262, 394, 407, 814, 1441, 2167, 2882, 4334, 4847, 7289, 9694, 14578, 25807, 51614, 53317, 80179, 106634, 160358, 283877, 567754, 954859, 1909718, 10503449, 21006898]

約数ペア:

[(1, 21006898), (2, 10503449), (11, 1909718), (22, 954859), (37, 567754), (74, 283877), (131, 160358), (197, 106634), (262, 80179), (394, 53317), (407, 51614), (814, 25807), (1441, 14578), (2167, 9694), (2882, 7289), (4334, 4847)]