21412480

素因数分解:

$2^7\times 5^1\times {\mathrm{33457}}^1$

素因数の和:33476

約数の個数: 32

約数和(自身を含む): 51190740

約数和(自身を除く): 29778260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33457, 66914, 133828, 167285, 267656, 334570, 535312, 669140, 1070624, 1338280, 2141248, 2676560, 4282496, 5353120, 10706240, 21412480]

約数ペア:

[(1, 21412480), (2, 10706240), (4, 5353120), (5, 4282496), (8, 2676560), (10, 2141248), (16, 1338280), (20, 1070624), (32, 669140), (40, 535312), (64, 334570), (80, 267656), (128, 167285), (160, 133828), (320, 66914), (640, 33457)]