19988656

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1873}}^1$

素因数の和:1933

約数の個数: 40

約数和(自身を含む): 41827680

約数和(自身を除く): 21839024

約数列:

[1, 2, 4, 8, 16, 23, 29, 46, 58, 92, 116, 184, 232, 368, 464, 667, 1334, 1873, 2668, 3746, 5336, 7492, 10672, 14984, 29968, 43079, 54317, 86158, 108634, 172316, 217268, 344632, 434536, 689264, 869072, 1249291, 2498582, 4997164, 9994328, 19988656]

約数ペア:

[(1, 19988656), (2, 9994328), (4, 4997164), (8, 2498582), (16, 1249291), (23, 869072), (29, 689264), (46, 434536), (58, 344632), (92, 217268), (116, 172316), (184, 108634), (232, 86158), (368, 54317), (464, 43079), (667, 29968), (1334, 14984), (1873, 10672), (2668, 7492), (3746, 5336)]