20995798

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:304

約数の個数: 32

約数和(自身を含む): 34610400

約数和(自身を除く): 13614602

約数列:

[1, 2, 19, 37, 38, 74, 109, 137, 218, 274, 703, 1406, 2071, 2603, 4033, 4142, 5069, 5206, 8066, 10138, 14933, 29866, 76627, 96311, 153254, 192622, 283727, 552521, 567454, 1105042, 10497899, 20995798]

約数ペア:

[(1, 20995798), (2, 10497899), (19, 1105042), (37, 567454), (38, 552521), (74, 283727), (109, 192622), (137, 153254), (218, 96311), (274, 76627), (703, 29866), (1406, 14933), (2071, 10138), (2603, 8066), (4033, 5206), (4142, 5069)]