19916788

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{503}}^1\times {\mathrm{521}}^1$

素因数の和:1047

約数の個数: 24

約数和(自身を含む): 36832320

約数和(自身を除く): 16915532

約数列:

[1, 2, 4, 19, 38, 76, 503, 521, 1006, 1042, 2012, 2084, 9557, 9899, 19114, 19798, 38228, 39596, 262063, 524126, 1048252, 4979197, 9958394, 19916788]

約数ペア:

[(1, 19916788), (2, 9958394), (4, 4979197), (19, 1048252), (38, 524126), (76, 262063), (503, 39596), (521, 38228), (1006, 19798), (1042, 19114), (2012, 9899), (2084, 9557)]