21230992

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{30859}}^1$

素因数の和:30910

約数の個数: 20

約数和(自身を含む): 42093040

約数和(自身を除く): 20862048

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 30859, 61718, 123436, 246872, 493744, 1326937, 2653874, 5307748, 10615496, 21230992]

約数ペア:

[(1, 21230992), (2, 10615496), (4, 5307748), (8, 2653874), (16, 1326937), (43, 493744), (86, 246872), (172, 123436), (344, 61718), (688, 30859)]