20621289

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1637}}^1$

素因数の和:1689

約数の個数: 32

約数和(自身を含む): 33022080

約数和(自身を除く): 12400791

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 221, 247, 323, 663, 741, 969, 1637, 4199, 4911, 12597, 21281, 27829, 31103, 63843, 83487, 93309, 361777, 404339, 528751, 1085331, 1213017, 1586253, 6873763, 20621289]

約数ペア:

[(1, 20621289), (3, 6873763), (13, 1586253), (17, 1213017), (19, 1085331), (39, 528751), (51, 404339), (57, 361777), (221, 93309), (247, 83487), (323, 63843), (663, 31103), (741, 27829), (969, 21281), (1637, 12597), (4199, 4911)]