19205516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 38610432

約数和(自身を除く): 19404916

約数列:

[1, 2, 4, 11, 22, 37, 44, 47, 74, 94, 148, 188, 251, 407, 502, 517, 814, 1004, 1034, 1628, 1739, 2068, 2761, 3478, 5522, 6956, 9287, 11044, 11797, 18574, 19129, 23594, 37148, 38258, 47188, 76516, 102157, 129767, 204314, 259534, 408628, 436489, 519068, 872978, 1745956, 4801379, 9602758, 19205516]

約数ペア:

[(1, 19205516), (2, 9602758), (4, 4801379), (11, 1745956), (22, 872978), (37, 519068), (44, 436489), (47, 408628), (74, 259534), (94, 204314), (148, 129767), (188, 102157), (251, 76516), (407, 47188), (502, 38258), (517, 37148), (814, 23594), (1004, 19129), (1034, 18574), (1628, 11797), (1739, 11044), (2068, 9287), (2761, 6956), (3478, 5522)]