21888368

素因数分解:

$2^4\times {\mathrm{331}}^1\times {\mathrm{4133}}^1$

素因数の和:4472

約数の個数: 20

約数和(自身を含む): 42547128

約数和(自身を除く): 20658760

約数列:

[1, 2, 4, 8, 16, 331, 662, 1324, 2648, 4133, 5296, 8266, 16532, 33064, 66128, 1368023, 2736046, 5472092, 10944184, 21888368]

約数ペア:

[(1, 21888368), (2, 10944184), (4, 5472092), (8, 2736046), (16, 1368023), (331, 66128), (662, 33064), (1324, 16532), (2648, 8266), (4133, 5296)]