20356371

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5297}}^1$

素因数の和:5371

約数の個数: 24

約数和(自身を含む): 34161504

約数和(自身を除く): 13805133

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5297, 15891, 37079, 47673, 111237, 323117, 333711, 969351, 2261819, 2908053, 6785457, 20356371]

約数ペア:

[(1, 20356371), (3, 6785457), (7, 2908053), (9, 2261819), (21, 969351), (61, 333711), (63, 323117), (183, 111237), (427, 47673), (549, 37079), (1281, 15891), (3843, 5297)]