78845140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{809}}^1$

素因数の和:1272

約数の個数: 48

約数和(自身を含む): 181258560

約数和(自身を除く): 102413420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 443, 809, 886, 1618, 1772, 2215, 3236, 4045, 4430, 4873, 8090, 8860, 8899, 9746, 16180, 17798, 19492, 24365, 35596, 44495, 48730, 88990, 97460, 177980, 358387, 716774, 1433548, 1791935, 3583870, 3942257, 7167740, 7884514, 15769028, 19711285, 39422570, 78845140]

約数ペア:

[(1, 78845140), (2, 39422570), (4, 19711285), (5, 15769028), (10, 7884514), (11, 7167740), (20, 3942257), (22, 3583870), (44, 1791935), (55, 1433548), (110, 716774), (220, 358387), (443, 177980), (809, 97460), (886, 88990), (1618, 48730), (1772, 44495), (2215, 35596), (3236, 24365), (4045, 19492), (4430, 17798), (4873, 16180), (8090, 9746), (8860, 8899)]