1914978640

素因数分解:

$2^4\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{19477}}^1$

素因数の和:20719

約数の個数: 40

約数和(自身を含む): 4456176840

約数和(自身を除く): 2541198200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1229, 2458, 4916, 6145, 9832, 12290, 19477, 19664, 24580, 38954, 49160, 77908, 97385, 98320, 155816, 194770, 311632, 389540, 779080, 1558160, 23937233, 47874466, 95748932, 119686165, 191497864, 239372330, 382995728, 478744660, 957489320, 1914978640]

約数ペア:

[(1, 1914978640), (2, 957489320), (4, 478744660), (5, 382995728), (8, 239372330), (10, 191497864), (16, 119686165), (20, 95748932), (40, 47874466), (80, 23937233), (1229, 1558160), (2458, 779080), (4916, 389540), (6145, 311632), (9832, 194770), (12290, 155816), (19477, 98320), (19664, 97385), (24580, 77908), (38954, 49160)]