20515383

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 17500617

約数列:

[1, 3, 7, 9, 19, 21, 27, 29, 57, 63, 87, 133, 171, 189, 197, 203, 261, 399, 513, 551, 591, 609, 783, 1197, 1379, 1653, 1773, 1827, 3591, 3743, 3857, 4137, 4959, 5319, 5481, 5713, 11229, 11571, 12411, 14877, 17139, 26201, 33687, 34713, 37233, 39991, 51417, 78603, 101061, 104139, 108547, 119973, 154251, 235809, 325641, 359919, 707427, 759829, 976923, 1079757, 2279487, 2930769, 6838461, 20515383]

約数ペア:

[(1, 20515383), (3, 6838461), (7, 2930769), (9, 2279487), (19, 1079757), (21, 976923), (27, 759829), (29, 707427), (57, 359919), (63, 325641), (87, 235809), (133, 154251), (171, 119973), (189, 108547), (197, 104139), (203, 101061), (261, 78603), (399, 51417), (513, 39991), (551, 37233), (591, 34713), (609, 33687), (783, 26201), (1197, 17139), (1379, 14877), (1653, 12411), (1773, 11571), (1827, 11229), (3591, 5713), (3743, 5481), (3857, 5319), (4137, 4959)]