21187818

素因数分解:

$2^1\times 3^4\times {\mathrm{31}}^1\times {\mathrm{4219}}^1$

素因数の和:4264

約数の個数: 40

約数和(自身を含む): 49019520

約数和(自身を除く): 27831702

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 81, 93, 162, 186, 279, 558, 837, 1674, 2511, 4219, 5022, 8438, 12657, 25314, 37971, 75942, 113913, 130789, 227826, 261578, 341739, 392367, 683478, 784734, 1177101, 2354202, 3531303, 7062606, 10593909, 21187818]

約数ペア:

[(1, 21187818), (2, 10593909), (3, 7062606), (6, 3531303), (9, 2354202), (18, 1177101), (27, 784734), (31, 683478), (54, 392367), (62, 341739), (81, 261578), (93, 227826), (162, 130789), (186, 113913), (279, 75942), (558, 37971), (837, 25314), (1674, 12657), (2511, 8438), (4219, 5022)]