21413120

素因数分解:

$2^8\times 5^1\times {\mathrm{16729}}^1$

素因数の和:16750

約数の個数: 36

約数和(自身を含む): 51294180

約数和(自身を除く): 29881060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16729, 33458, 66916, 83645, 133832, 167290, 267664, 334580, 535328, 669160, 1070656, 1338320, 2141312, 2676640, 4282624, 5353280, 10706560, 21413120]

約数ペア:

[(1, 21413120), (2, 10706560), (4, 5353280), (5, 4282624), (8, 2676640), (10, 2141312), (16, 1338320), (20, 1070656), (32, 669160), (40, 535328), (64, 334580), (80, 267664), (128, 167290), (160, 133832), (256, 83645), (320, 66916), (640, 33458), (1280, 16729)]