19780929

素因数分解:

$3^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{401}}^1$

素因数の和:452

約数の個数: 48

約数和(自身を含む): 35118720

約数和(自身を除く): 15337791

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 243, 261, 401, 567, 609, 783, 1203, 1701, 1827, 2349, 2807, 3609, 5481, 7047, 8421, 10827, 11629, 16443, 25263, 32481, 34887, 49329, 75789, 81403, 97443, 104661, 227367, 244209, 313983, 682101, 732627, 941949, 2197881, 2825847, 6593643, 19780929]

約数ペア:

[(1, 19780929), (3, 6593643), (7, 2825847), (9, 2197881), (21, 941949), (27, 732627), (29, 682101), (63, 313983), (81, 244209), (87, 227367), (189, 104661), (203, 97443), (243, 81403), (261, 75789), (401, 49329), (567, 34887), (609, 32481), (783, 25263), (1203, 16443), (1701, 11629), (1827, 10827), (2349, 8421), (2807, 7047), (3609, 5481)]