21188988

素因数分解:

$2^2\times 3^2\times {\mathrm{131}}^1\times {\mathrm{4493}}^1$

素因数の和:4634

約数の個数: 36

約数和(自身を含む): 53981928

約数和(自身を除く): 32792940

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 131, 262, 393, 524, 786, 1179, 1572, 2358, 4493, 4716, 8986, 13479, 17972, 26958, 40437, 53916, 80874, 161748, 588583, 1177166, 1765749, 2354332, 3531498, 5297247, 7062996, 10594494, 21188988]

約数ペア:

[(1, 21188988), (2, 10594494), (3, 7062996), (4, 5297247), (6, 3531498), (9, 2354332), (12, 1765749), (18, 1177166), (36, 588583), (131, 161748), (262, 80874), (393, 53916), (524, 40437), (786, 26958), (1179, 17972), (1572, 13479), (2358, 8986), (4493, 4716)]