21430178

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3761}}^1$

素因数の和:3818

約数の個数: 32

約数和(自身を含む): 41171328

約数和(自身を除く): 19741150

約数列:

[1, 2, 7, 11, 14, 22, 37, 74, 77, 154, 259, 407, 518, 814, 2849, 3761, 5698, 7522, 26327, 41371, 52654, 82742, 139157, 278314, 289597, 579194, 974099, 1530727, 1948198, 3061454, 10715089, 21430178]

約数ペア:

[(1, 21430178), (2, 10715089), (7, 3061454), (11, 1948198), (14, 1530727), (22, 974099), (37, 579194), (74, 289597), (77, 278314), (154, 139157), (259, 82742), (407, 52654), (518, 41371), (814, 26327), (2849, 7522), (3761, 5698)]