20376320

素因数分解:

$2^8\times 5^1\times {\mathrm{15919}}^1$

素因数の和:15940

約数の個数: 36

約数和(自身を含む): 48810720

約数和(自身を除く): 28434400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15919, 31838, 63676, 79595, 127352, 159190, 254704, 318380, 509408, 636760, 1018816, 1273520, 2037632, 2547040, 4075264, 5094080, 10188160, 20376320]

約数ペア:

[(1, 20376320), (2, 10188160), (4, 5094080), (5, 4075264), (8, 2547040), (10, 2037632), (16, 1273520), (20, 1018816), (32, 636760), (40, 509408), (64, 318380), (80, 254704), (128, 159190), (160, 127352), (256, 79595), (320, 63676), (640, 31838), (1280, 15919)]