19646416

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{271}}^1$

素因数の和:499

約数の個数: 40

約数和(自身を含む): 40068864

約数和(自身を除く): 20422448

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 197, 271, 368, 394, 542, 788, 1084, 1576, 2168, 3152, 4336, 4531, 6233, 9062, 12466, 18124, 24932, 36248, 49864, 53387, 72496, 99728, 106774, 213548, 427096, 854192, 1227901, 2455802, 4911604, 9823208, 19646416]

約数ペア:

[(1, 19646416), (2, 9823208), (4, 4911604), (8, 2455802), (16, 1227901), (23, 854192), (46, 427096), (92, 213548), (184, 106774), (197, 99728), (271, 72496), (368, 53387), (394, 49864), (542, 36248), (788, 24932), (1084, 18124), (1576, 12466), (2168, 9062), (3152, 6233), (4336, 4531)]