21038696

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{8737}}^1$

素因数の和:8793

約数の個数: 32

約数和(自身を含む): 46136640

約数和(自身を除く): 25097944

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 602, 1204, 2408, 8737, 17474, 34948, 61159, 69896, 122318, 244636, 375691, 489272, 751382, 1502764, 2629837, 3005528, 5259674, 10519348, 21038696]

約数ペア:

[(1, 21038696), (2, 10519348), (4, 5259674), (7, 3005528), (8, 2629837), (14, 1502764), (28, 751382), (43, 489272), (56, 375691), (86, 244636), (172, 122318), (301, 69896), (344, 61159), (602, 34948), (1204, 17474), (2408, 8737)]