21873047

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 27993600

約数和(自身を除く): 6120553

約数列:

[1, 7, 19, 29, 53, 107, 133, 203, 371, 551, 749, 1007, 1537, 2033, 3103, 3857, 5671, 7049, 10759, 14231, 21721, 29203, 39697, 58957, 107749, 164459, 204421, 412699, 754243, 1151213, 3124721, 21873047]

約数ペア:

[(1, 21873047), (7, 3124721), (19, 1151213), (29, 754243), (53, 412699), (107, 204421), (133, 164459), (203, 107749), (371, 58957), (551, 39697), (749, 29203), (1007, 21721), (1537, 14231), (2033, 10759), (3103, 7049), (3857, 5671)]