20488960

素因数分解:

$2^8\times 5^1\times {\mathrm{16007}}^1$

素因数の和:16028

約数の個数: 36

約数和(自身を含む): 49080528

約数和(自身を除く): 28591568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16007, 32014, 64028, 80035, 128056, 160070, 256112, 320140, 512224, 640280, 1024448, 1280560, 2048896, 2561120, 4097792, 5122240, 10244480, 20488960]

約数ペア:

[(1, 20488960), (2, 10244480), (4, 5122240), (5, 4097792), (8, 2561120), (10, 2048896), (16, 1280560), (20, 1024448), (32, 640280), (40, 512224), (64, 320140), (80, 256112), (128, 160070), (160, 128056), (256, 80035), (320, 64028), (640, 32014), (1280, 16007)]