18997352

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{3539}}^1$

素因数の和:3617

約数の個数: 32

約数和(自身を含む): 39506400

約数和(自身を除く): 20509048

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 244, 488, 671, 1342, 2684, 3539, 5368, 7078, 14156, 28312, 38929, 77858, 155716, 215879, 311432, 431758, 863516, 1727032, 2374669, 4749338, 9498676, 18997352]

約数ペア:

[(1, 18997352), (2, 9498676), (4, 4749338), (8, 2374669), (11, 1727032), (22, 863516), (44, 431758), (61, 311432), (88, 215879), (122, 155716), (244, 77858), (488, 38929), (671, 28312), (1342, 14156), (2684, 7078), (3539, 5368)]