21699171

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{6869}}^1$

素因数の和:6897

約数の個数: 24

約数和(自身を含む): 35009520

約数和(自身を除く): 13310349

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 6869, 20607, 61821, 89297, 185463, 267891, 556389, 803673, 1669167, 2411019, 7233057, 21699171]

約数ペア:

[(1, 21699171), (3, 7233057), (9, 2411019), (13, 1669167), (27, 803673), (39, 556389), (81, 267891), (117, 185463), (243, 89297), (351, 61821), (1053, 20607), (3159, 6869)]