19643518

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{9931}}^1$

素因数の和:9999

約数の個数: 16

約数和(自身を含む): 31464576

約数和(自身を除く): 11821058

約数列:

[1, 2, 23, 43, 46, 86, 989, 1978, 9931, 19862, 228413, 427033, 456826, 854066, 9821759, 19643518]

約数ペア:

[(1, 19643518), (2, 9821759), (23, 854066), (43, 456826), (46, 427033), (86, 228413), (989, 19862), (1978, 9931)]