21810327

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{359}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 14685033

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 263, 359, 789, 1077, 1841, 2513, 2893, 3949, 5523, 7539, 8679, 11847, 20251, 27643, 60753, 82929, 94417, 283251, 660919, 1038587, 1982757, 3115761, 7270109, 21810327]

約数ペア:

[(1, 21810327), (3, 7270109), (7, 3115761), (11, 1982757), (21, 1038587), (33, 660919), (77, 283251), (231, 94417), (263, 82929), (359, 60753), (789, 27643), (1077, 20251), (1841, 11847), (2513, 8679), (2893, 7539), (3949, 5523)]