21150003

素因数分解:

$3^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{5273}}^1$

素因数の和:5474

約数の個数: 16

約数和(自身を含む): 32403456

約数和(自身を除く): 11253453

約数列:

[1, 3, 7, 21, 191, 573, 1337, 4011, 5273, 15819, 36911, 110733, 1007143, 3021429, 7050001, 21150003]

約数ペア:

[(1, 21150003), (3, 7050001), (7, 3021429), (21, 1007143), (191, 110733), (573, 36911), (1337, 15819), (4011, 5273)]