21043127

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 6535753

約数列:

[1, 7, 17, 19, 41, 119, 133, 227, 287, 323, 697, 779, 1589, 2261, 3859, 4313, 4879, 5453, 9307, 13243, 27013, 30191, 65149, 73321, 92701, 158219, 176833, 513247, 1107533, 1237831, 3006161, 21043127]

約数ペア:

[(1, 21043127), (7, 3006161), (17, 1237831), (19, 1107533), (41, 513247), (119, 176833), (133, 158219), (227, 92701), (287, 73321), (323, 65149), (697, 30191), (779, 27013), (1589, 13243), (2261, 9307), (3859, 5453), (4313, 4879)]