21718767

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1877}}^1$

素因数の和:1935

約数の個数: 32

約数和(自身を含む): 36057600

約数和(自身を除く): 14338833

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 1877, 3857, 5631, 11571, 13139, 35663, 39417, 54433, 106989, 163299, 249641, 381031, 748923, 1034227, 1143093, 3102681, 7239589, 21718767]

約数ペア:

[(1, 21718767), (3, 7239589), (7, 3102681), (19, 1143093), (21, 1034227), (29, 748923), (57, 381031), (87, 249641), (133, 163299), (203, 106989), (399, 54433), (551, 39417), (609, 35663), (1653, 13139), (1877, 11571), (3857, 5631)]