21359744

素因数分解:

$2^7\times 7^1\times {\mathrm{31}}^1\times {\mathrm{769}}^1$

素因数の和:821

約数の個数: 64

約数和(自身を含む): 50265600

約数和(自身を除く): 28905856

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 434, 448, 496, 769, 868, 896, 992, 1538, 1736, 1984, 3076, 3472, 3968, 5383, 6152, 6944, 10766, 12304, 13888, 21532, 23839, 24608, 27776, 43064, 47678, 49216, 86128, 95356, 98432, 166873, 172256, 190712, 333746, 344512, 381424, 667492, 689024, 762848, 1334984, 1525696, 2669968, 3051392, 5339936, 10679872, 21359744]

約数ペア:

[(1, 21359744), (2, 10679872), (4, 5339936), (7, 3051392), (8, 2669968), (14, 1525696), (16, 1334984), (28, 762848), (31, 689024), (32, 667492), (56, 381424), (62, 344512), (64, 333746), (112, 190712), (124, 172256), (128, 166873), (217, 98432), (224, 95356), (248, 86128), (434, 49216), (448, 47678), (496, 43064), (769, 27776), (868, 24608), (896, 23839), (992, 21532), (1538, 13888), (1736, 12304), (1984, 10766), (3076, 6944), (3472, 6152), (3968, 5383)]