15281920

素因数分解:

$2^8\times 5^1\times {\mathrm{11939}}^1$

素因数の和:11960

約数の個数: 36

約数和(自身を含む): 36608040

約数和(自身を除く): 21326120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 11939, 23878, 47756, 59695, 95512, 119390, 191024, 238780, 382048, 477560, 764096, 955120, 1528192, 1910240, 3056384, 3820480, 7640960, 15281920]

約数ペア:

[(1, 15281920), (2, 7640960), (4, 3820480), (5, 3056384), (8, 1910240), (10, 1528192), (16, 955120), (20, 764096), (32, 477560), (40, 382048), (64, 238780), (80, 191024), (128, 119390), (160, 95512), (256, 59695), (320, 47756), (640, 23878), (1280, 11939)]