21000273

素因数分解:

$3^1\times 7^2\times {\mathrm{373}}^1\times {\mathrm{383}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 32744448

約数和(自身を除く): 11744175

約数列:

[1, 3, 7, 21, 49, 147, 373, 383, 1119, 1149, 2611, 2681, 7833, 8043, 18277, 18767, 54831, 56301, 142859, 428577, 1000013, 3000039, 7000091, 21000273]

約数ペア:

[(1, 21000273), (3, 7000091), (7, 3000039), (21, 1000013), (49, 428577), (147, 142859), (373, 56301), (383, 54831), (1119, 18767), (1149, 18277), (2611, 8043), (2681, 7833)]