19991010

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{3943}}^1$

素因数の和:3979

約数の個数: 48

約数和(自身を含む): 51966144

約数和(自身を除く): 31975134

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 169, 195, 338, 390, 507, 845, 1014, 1690, 2535, 3943, 5070, 7886, 11829, 19715, 23658, 39430, 51259, 59145, 102518, 118290, 153777, 256295, 307554, 512590, 666367, 768885, 1332734, 1537770, 1999101, 3331835, 3998202, 6663670, 9995505, 19991010]

約数ペア:

[(1, 19991010), (2, 9995505), (3, 6663670), (5, 3998202), (6, 3331835), (10, 1999101), (13, 1537770), (15, 1332734), (26, 768885), (30, 666367), (39, 512590), (65, 307554), (78, 256295), (130, 153777), (169, 118290), (195, 102518), (338, 59145), (390, 51259), (507, 39430), (845, 23658), (1014, 19715), (1690, 11829), (2535, 7886), (3943, 5070)]