20147721

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{569}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 31190400

約数和(自身を除く): 11042679

約数列:

[1, 3, 11, 29, 33, 37, 87, 111, 319, 407, 569, 957, 1073, 1221, 1707, 3219, 6259, 11803, 16501, 18777, 21053, 35409, 49503, 63159, 181511, 231583, 544533, 610537, 694749, 1831611, 6715907, 20147721]

約数ペア:

[(1, 20147721), (3, 6715907), (11, 1831611), (29, 694749), (33, 610537), (37, 544533), (87, 231583), (111, 181511), (319, 63159), (407, 49503), (569, 35409), (957, 21053), (1073, 18777), (1221, 16501), (1707, 11803), (3219, 6259)]