16728080

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{991}}^1$

素因数の和:1215

約数の個数: 40

約数和(自身を含む): 39116544

約数和(自身を除く): 22388464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 991, 1055, 1688, 1982, 2110, 3376, 3964, 4220, 4955, 7928, 8440, 9910, 15856, 16880, 19820, 39640, 79280, 209101, 418202, 836404, 1045505, 1672808, 2091010, 3345616, 4182020, 8364040, 16728080]

約数ペア:

[(1, 16728080), (2, 8364040), (4, 4182020), (5, 3345616), (8, 2091010), (10, 1672808), (16, 1045505), (20, 836404), (40, 418202), (80, 209101), (211, 79280), (422, 39640), (844, 19820), (991, 16880), (1055, 15856), (1688, 9910), (1982, 8440), (2110, 7928), (3376, 4955), (3964, 4220)]