21801591

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11933}}^1$

素因数の和:11975

約数の個数: 24

約数和(自身を含む): 37234080

約数和(自身を除く): 15432489

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11933, 35799, 83531, 107397, 250593, 346057, 751779, 1038171, 2422399, 3114513, 7267197, 21801591]

約数ペア:

[(1, 21801591), (3, 7267197), (7, 3114513), (9, 2422399), (21, 1038171), (29, 751779), (63, 346057), (87, 250593), (203, 107397), (261, 83531), (609, 35799), (1827, 11933)]