21451136

素因数分解:

$2^7\times 7^1\times {\mathrm{89}}^1\times {\mathrm{269}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 49572000

約数和(自身を除く): 28120864

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 89, 112, 128, 178, 224, 269, 356, 448, 538, 623, 712, 896, 1076, 1246, 1424, 1883, 2152, 2492, 2848, 3766, 4304, 4984, 5696, 7532, 8608, 9968, 11392, 15064, 17216, 19936, 23941, 30128, 34432, 39872, 47882, 60256, 79744, 95764, 120512, 167587, 191528, 241024, 335174, 383056, 670348, 766112, 1340696, 1532224, 2681392, 3064448, 5362784, 10725568, 21451136]

約数ペア:

[(1, 21451136), (2, 10725568), (4, 5362784), (7, 3064448), (8, 2681392), (14, 1532224), (16, 1340696), (28, 766112), (32, 670348), (56, 383056), (64, 335174), (89, 241024), (112, 191528), (128, 167587), (178, 120512), (224, 95764), (269, 79744), (356, 60256), (448, 47882), (538, 39872), (623, 34432), (712, 30128), (896, 23941), (1076, 19936), (1246, 17216), (1424, 15064), (1883, 11392), (2152, 9968), (2492, 8608), (2848, 7532), (3766, 5696), (4304, 4984)]