21367760

素因数分解:

$2^4\times 5^1\times {\mathrm{267097}}^1$

素因数の和:267110

約数の個数: 20

約数和(自身を含む): 49680228

約数和(自身を除く): 28312468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267097, 534194, 1068388, 1335485, 2136776, 2670970, 4273552, 5341940, 10683880, 21367760]

約数ペア:

[(1, 21367760), (2, 10683880), (4, 5341940), (5, 4273552), (8, 2670970), (10, 2136776), (16, 1335485), (20, 1068388), (40, 534194), (80, 267097)]