19243016

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 40098960

約数和(自身を除く): 20855944

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 169, 172, 331, 338, 344, 559, 662, 676, 1118, 1324, 1352, 2236, 2648, 4303, 4472, 7267, 8606, 14233, 14534, 17212, 28466, 29068, 34424, 55939, 56932, 58136, 111878, 113864, 185029, 223756, 370058, 447512, 740116, 1480232, 2405377, 4810754, 9621508, 19243016]

約数ペア:

[(1, 19243016), (2, 9621508), (4, 4810754), (8, 2405377), (13, 1480232), (26, 740116), (43, 447512), (52, 370058), (86, 223756), (104, 185029), (169, 113864), (172, 111878), (331, 58136), (338, 56932), (344, 55939), (559, 34424), (662, 29068), (676, 28466), (1118, 17212), (1324, 14534), (1352, 14233), (2236, 8606), (2648, 7267), (4303, 4472)]