21000969828

素因数分解:

$2^2\times 3^2\times {\mathrm{1423}}^1\times {\mathrm{409951}}^1$

素因数の和:411384

約数の個数: 36

約数和(自身を含む): 53123219968

約数和(自身を除く): 32122250140

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 1423, 2846, 4269, 5692, 8538, 12807, 17076, 25614, 51228, 409951, 819902, 1229853, 1639804, 2459706, 3689559, 4919412, 7379118, 14758236, 583360273, 1166720546, 1750080819, 2333441092, 3500161638, 5250242457, 7000323276, 10500484914, 21000969828]

約数ペア:

[(1, 21000969828), (2, 10500484914), (3, 7000323276), (4, 5250242457), (6, 3500161638), (9, 2333441092), (12, 1750080819), (18, 1166720546), (36, 583360273), (1423, 14758236), (2846, 7379118), (4269, 4919412), (5692, 3689559), (8538, 2459706), (12807, 1639804), (17076, 1229853), (25614, 819902), (51228, 409951)]