21384320

素因数分解:

$2^7\times 5^1\times {\mathrm{33413}}^1$

素因数の和:33432

約数の個数: 32

約数和(自身を含む): 51123420

約数和(自身を除く): 29739100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33413, 66826, 133652, 167065, 267304, 334130, 534608, 668260, 1069216, 1336520, 2138432, 2673040, 4276864, 5346080, 10692160, 21384320]

約数ペア:

[(1, 21384320), (2, 10692160), (4, 5346080), (5, 4276864), (8, 2673040), (10, 2138432), (16, 1336520), (20, 1069216), (32, 668260), (40, 534608), (64, 334130), (80, 267304), (128, 167065), (160, 133652), (320, 66826), (640, 33413)]