71988903

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{7669}}^1$

素因数の和:7831

約数の個数: 24

約数和(自身を含む): 119652000

約数和(自身を除く): 47663097

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 3129, 7669, 9387, 23007, 53683, 69021, 161049, 483147, 1142681, 3428043, 7998767, 10284129, 23996301, 71988903]

約数ペア:

[(1, 71988903), (3, 23996301), (7, 10284129), (9, 7998767), (21, 3428043), (63, 1142681), (149, 483147), (447, 161049), (1043, 69021), (1341, 53683), (3129, 23007), (7669, 9387)]