19937792

素因数分解:

$2^9\times 7^1\times {\mathrm{5563}}^1$

素因数の和:5588

約数の個数: 40

約数和(自身を含む): 45535776

約数和(自身を除く): 25597984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1792, 3584, 5563, 11126, 22252, 38941, 44504, 77882, 89008, 155764, 178016, 311528, 356032, 623056, 712064, 1246112, 1424128, 2492224, 2848256, 4984448, 9968896, 19937792]

約数ペア:

[(1, 19937792), (2, 9968896), (4, 4984448), (7, 2848256), (8, 2492224), (14, 1424128), (16, 1246112), (28, 712064), (32, 623056), (56, 356032), (64, 311528), (112, 178016), (128, 155764), (224, 89008), (256, 77882), (448, 44504), (512, 38941), (896, 22252), (1792, 11126), (3584, 5563)]