21385120

素因数分解:

$2^5\times 5^1\times {\mathrm{133657}}^1$

素因数の和:133672

約数の個数: 24

約数和(自身を含む): 50522724

約数和(自身を除く): 29137604

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133657, 267314, 534628, 668285, 1069256, 1336570, 2138512, 2673140, 4277024, 5346280, 10692560, 21385120]

約数ペア:

[(1, 21385120), (2, 10692560), (4, 5346280), (5, 4277024), (8, 2673140), (10, 2138512), (16, 1336570), (20, 1069256), (32, 668285), (40, 534628), (80, 267314), (160, 133657)]