19719856

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{839}}^1$

素因数の和:973

約数の個数: 40

約数和(自身を含む): 41559840

約数和(自身を除く): 21839984

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 113, 208, 226, 452, 839, 904, 1469, 1678, 1808, 2938, 3356, 5876, 6712, 10907, 11752, 13424, 21814, 23504, 43628, 87256, 94807, 174512, 189614, 379228, 758456, 1232491, 1516912, 2464982, 4929964, 9859928, 19719856]

約数ペア:

[(1, 19719856), (2, 9859928), (4, 4929964), (8, 2464982), (13, 1516912), (16, 1232491), (26, 758456), (52, 379228), (104, 189614), (113, 174512), (208, 94807), (226, 87256), (452, 43628), (839, 23504), (904, 21814), (1469, 13424), (1678, 11752), (1808, 10907), (2938, 6712), (3356, 5876)]