21431571

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4703}}^1$

素因数の和:4751

約数の個数: 24

約数和(自身を含む): 34320384

約数和(自身を除く): 12888813

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4557, 4703, 14109, 32921, 98763, 145793, 230447, 437379, 691341, 1020551, 3061653, 7143857, 21431571]

約数ペア:

[(1, 21431571), (3, 7143857), (7, 3061653), (21, 1020551), (31, 691341), (49, 437379), (93, 230447), (147, 145793), (217, 98763), (651, 32921), (1519, 14109), (4557, 4703)]