20411648

素因数分解:

$2^8\times {\mathrm{71}}^1\times {\mathrm{1123}}^1$

素因数の和:1210

約数の個数: 36

約数和(自身を含む): 41354208

約数和(自身を除く): 20942560

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 256, 284, 568, 1123, 1136, 2246, 2272, 4492, 4544, 8984, 9088, 17968, 18176, 35936, 71872, 79733, 143744, 159466, 287488, 318932, 637864, 1275728, 2551456, 5102912, 10205824, 20411648]

約数ペア:

[(1, 20411648), (2, 10205824), (4, 5102912), (8, 2551456), (16, 1275728), (32, 637864), (64, 318932), (71, 287488), (128, 159466), (142, 143744), (256, 79733), (284, 71872), (568, 35936), (1123, 18176), (1136, 17968), (2246, 9088), (2272, 8984), (4492, 4544)]