19981696

素因数分解:

$2^7\times 7^1\times {\mathrm{29}}^1\times {\mathrm{769}}^1$

素因数の和:819

約数の個数: 64

約数和(自身を含む): 47124000

約数和(自身を除く): 27142304

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 64, 112, 116, 128, 203, 224, 232, 406, 448, 464, 769, 812, 896, 928, 1538, 1624, 1856, 3076, 3248, 3712, 5383, 6152, 6496, 10766, 12304, 12992, 21532, 22301, 24608, 25984, 43064, 44602, 49216, 86128, 89204, 98432, 156107, 172256, 178408, 312214, 344512, 356816, 624428, 689024, 713632, 1248856, 1427264, 2497712, 2854528, 4995424, 9990848, 19981696]

約数ペア:

[(1, 19981696), (2, 9990848), (4, 4995424), (7, 2854528), (8, 2497712), (14, 1427264), (16, 1248856), (28, 713632), (29, 689024), (32, 624428), (56, 356816), (58, 344512), (64, 312214), (112, 178408), (116, 172256), (128, 156107), (203, 98432), (224, 89204), (232, 86128), (406, 49216), (448, 44602), (464, 43064), (769, 25984), (812, 24608), (896, 22301), (928, 21532), (1538, 12992), (1624, 12304), (1856, 10766), (3076, 6496), (3248, 6152), (3712, 5383)]