21271761

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3881}}^1$

素因数の和:3926

約数の個数: 32

約数和(自身を含む): 37267200

約数和(自身を除く): 15995439

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3881, 5481, 11643, 27167, 34929, 81501, 104787, 112549, 244503, 337647, 733509, 787843, 1012941, 2363529, 3038823, 7090587, 21271761]

約数ペア:

[(1, 21271761), (3, 7090587), (7, 3038823), (9, 2363529), (21, 1012941), (27, 787843), (29, 733509), (63, 337647), (87, 244503), (189, 112549), (203, 104787), (261, 81501), (609, 34929), (783, 27167), (1827, 11643), (3881, 5481)]