20138240

素因数分解:

$2^8\times 5^1\times {\mathrm{15733}}^1$

素因数の和:15754

約数の個数: 36

約数和(自身を含む): 48240444

約数和(自身を除く): 28102204

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15733, 31466, 62932, 78665, 125864, 157330, 251728, 314660, 503456, 629320, 1006912, 1258640, 2013824, 2517280, 4027648, 5034560, 10069120, 20138240]

約数ペア:

[(1, 20138240), (2, 10069120), (4, 5034560), (5, 4027648), (8, 2517280), (10, 2013824), (16, 1258640), (20, 1006912), (32, 629320), (40, 503456), (64, 314660), (80, 251728), (128, 157330), (160, 125864), (256, 78665), (320, 62932), (640, 31466), (1280, 15733)]