21031516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{907}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 43932672

約数和(自身を除く): 22901156

約数列:

[1, 2, 4, 11, 17, 22, 31, 34, 44, 62, 68, 124, 187, 341, 374, 527, 682, 748, 907, 1054, 1364, 1814, 2108, 3628, 5797, 9977, 11594, 15419, 19954, 23188, 28117, 30838, 39908, 56234, 61676, 112468, 169609, 309287, 339218, 477989, 618574, 678436, 955978, 1237148, 1911956, 5257879, 10515758, 21031516]

約数ペア:

[(1, 21031516), (2, 10515758), (4, 5257879), (11, 1911956), (17, 1237148), (22, 955978), (31, 678436), (34, 618574), (44, 477989), (62, 339218), (68, 309287), (124, 169609), (187, 112468), (341, 61676), (374, 56234), (527, 39908), (682, 30838), (748, 28117), (907, 23188), (1054, 19954), (1364, 15419), (1814, 11594), (2108, 9977), (3628, 5797)]