81513770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1\times {\mathrm{347}}^1$

素因数の和:519

約数の個数: 48

約数和(自身を含む): 160483680

約数和(自身を除く): 78969910

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 139, 169, 278, 338, 347, 694, 695, 845, 1390, 1690, 1735, 1807, 3470, 3614, 4511, 9022, 9035, 18070, 22555, 23491, 45110, 46982, 48233, 58643, 96466, 117286, 117455, 234910, 241165, 293215, 482330, 586430, 627029, 1254058, 3135145, 6270290, 8151377, 16302754, 40756885, 81513770]

約数ペア:

[(1, 81513770), (2, 40756885), (5, 16302754), (10, 8151377), (13, 6270290), (26, 3135145), (65, 1254058), (130, 627029), (139, 586430), (169, 482330), (278, 293215), (338, 241165), (347, 234910), (694, 117455), (695, 117286), (845, 96466), (1390, 58643), (1690, 48233), (1735, 46982), (1807, 45110), (3470, 23491), (3614, 22555), (4511, 18070), (9022, 9035)]