18899996

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{2671}}^1$

素因数の和:2765

約数の個数: 24

約数和(自身を含む): 34789440

約数和(自身を除く): 15889444

約数列:

[1, 2, 4, 29, 58, 61, 116, 122, 244, 1769, 2671, 3538, 5342, 7076, 10684, 77459, 154918, 162931, 309836, 325862, 651724, 4724999, 9449998, 18899996]

約数ペア:

[(1, 18899996), (2, 9449998), (4, 4724999), (29, 651724), (58, 325862), (61, 309836), (116, 162931), (122, 154918), (244, 77459), (1769, 10684), (2671, 7076), (3538, 5342)]