20731904

素因数分解:

$2^{11}\times {\mathrm{53}}^1\times {\mathrm{191}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 21725056

約数列:

[1, 2, 4, 8, 16, 32, 53, 64, 106, 128, 191, 212, 256, 382, 424, 512, 764, 848, 1024, 1528, 1696, 2048, 3056, 3392, 6112, 6784, 10123, 12224, 13568, 20246, 24448, 27136, 40492, 48896, 54272, 80984, 97792, 108544, 161968, 195584, 323936, 391168, 647872, 1295744, 2591488, 5182976, 10365952, 20731904]

約数ペア:

[(1, 20731904), (2, 10365952), (4, 5182976), (8, 2591488), (16, 1295744), (32, 647872), (53, 391168), (64, 323936), (106, 195584), (128, 161968), (191, 108544), (212, 97792), (256, 80984), (382, 54272), (424, 48896), (512, 40492), (764, 27136), (848, 24448), (1024, 20246), (1528, 13568), (1696, 12224), (2048, 10123), (3056, 6784), (3392, 6112)]