721895139

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{3793}}^1$

素因数の和:3881

約数の個数: 64

約数和(自身を含む): 1311206400

約数和(自身を除く): 589311261

約数列:

[1, 3, 7, 9, 19, 21, 27, 53, 57, 63, 133, 159, 171, 189, 371, 399, 477, 513, 1007, 1113, 1197, 1431, 3021, 3339, 3591, 3793, 7049, 9063, 10017, 11379, 21147, 26551, 27189, 34137, 63441, 72067, 79653, 102411, 190323, 201029, 216201, 238959, 504469, 603087, 648603, 716877, 1407203, 1513407, 1809261, 1945809, 3819551, 4221609, 4540221, 5427783, 11458653, 12664827, 13620663, 26736857, 34375959, 37994481, 80210571, 103127877, 240631713, 721895139]

約数ペア:

[(1, 721895139), (3, 240631713), (7, 103127877), (9, 80210571), (19, 37994481), (21, 34375959), (27, 26736857), (53, 13620663), (57, 12664827), (63, 11458653), (133, 5427783), (159, 4540221), (171, 4221609), (189, 3819551), (371, 1945809), (399, 1809261), (477, 1513407), (513, 1407203), (1007, 716877), (1113, 648603), (1197, 603087), (1431, 504469), (3021, 238959), (3339, 216201), (3591, 201029), (3793, 190323), (7049, 102411), (9063, 79653), (10017, 72067), (11379, 63441), (21147, 34137), (26551, 27189)]