21117213

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3539}}^1$

素因数の和:3578

約数の個数: 32

約数和(自身を含む): 35683200

約数和(自身を除く): 14565987

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 117, 153, 221, 351, 459, 663, 1989, 3539, 5967, 10617, 31851, 46007, 60163, 95553, 138021, 180489, 414063, 541467, 782119, 1242189, 1624401, 2346357, 7039071, 21117213]

約数ペア:

[(1, 21117213), (3, 7039071), (9, 2346357), (13, 1624401), (17, 1242189), (27, 782119), (39, 541467), (51, 414063), (117, 180489), (153, 138021), (221, 95553), (351, 60163), (459, 46007), (663, 31851), (1989, 10617), (3539, 5967)]