21213164

素因数分解:

$2^2\times 7^1\times {\mathrm{491}}^1\times {\mathrm{1543}}^1$

素因数の和:2045

約数の個数: 24

約数和(自身を含む): 42540288

約数和(自身を除く): 21327124

約数列:

[1, 2, 4, 7, 14, 28, 491, 982, 1543, 1964, 3086, 3437, 6172, 6874, 10801, 13748, 21602, 43204, 757613, 1515226, 3030452, 5303291, 10606582, 21213164]

約数ペア:

[(1, 21213164), (2, 10606582), (4, 5303291), (7, 3030452), (14, 1515226), (28, 757613), (491, 43204), (982, 21602), (1543, 13748), (1964, 10801), (3086, 6874), (3437, 6172)]