20474240

素因数分解:

$2^7\times 5^1\times {\mathrm{31991}}^1$

素因数の和:32010

約数の個数: 32

約数和(自身を含む): 48947760

約数和(自身を除く): 28473520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31991, 63982, 127964, 159955, 255928, 319910, 511856, 639820, 1023712, 1279640, 2047424, 2559280, 4094848, 5118560, 10237120, 20474240]

約数ペア:

[(1, 20474240), (2, 10237120), (4, 5118560), (5, 4094848), (8, 2559280), (10, 2047424), (16, 1279640), (20, 1023712), (32, 639820), (40, 511856), (64, 319910), (80, 255928), (128, 159955), (160, 127964), (320, 63982), (640, 31991)]