21401560

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2357}}^1$

素因数の和:2595

約数の個数: 32

約数和(自身を含む): 48386160

約数和(自身を除く): 26984600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2270, 2357, 4540, 4714, 9080, 9428, 11785, 18856, 23570, 47140, 94280, 535039, 1070078, 2140156, 2675195, 4280312, 5350390, 10700780, 21401560]

約数ペア:

[(1, 21401560), (2, 10700780), (4, 5350390), (5, 4280312), (8, 2675195), (10, 2140156), (20, 1070078), (40, 535039), (227, 94280), (454, 47140), (908, 23570), (1135, 18856), (1816, 11785), (2270, 9428), (2357, 9080), (4540, 4714)]