20202819

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1721}}^1$

素因数の和:1787

約数の個数: 32

約数和(自身を含む): 33944064

約数和(自身を除く): 13741245

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 1721, 3913, 5163, 11739, 12047, 22373, 36141, 67119, 74003, 156611, 222009, 469833, 518021, 962039, 1554063, 2886117, 6734273, 20202819]

約数ペア:

[(1, 20202819), (3, 6734273), (7, 2886117), (13, 1554063), (21, 962039), (39, 518021), (43, 469833), (91, 222009), (129, 156611), (273, 74003), (301, 67119), (559, 36141), (903, 22373), (1677, 12047), (1721, 11739), (3913, 5163)]