19828528

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{271}}^1$

素因数の和:565

約数の個数: 40

約数和(自身を含む): 40979520

約数和(自身を除く): 21150992

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 269, 271, 272, 538, 542, 1076, 1084, 2152, 2168, 4304, 4336, 4573, 4607, 9146, 9214, 18292, 18428, 36584, 36856, 72899, 73168, 73712, 145798, 291596, 583192, 1166384, 1239283, 2478566, 4957132, 9914264, 19828528]

約数ペア:

[(1, 19828528), (2, 9914264), (4, 4957132), (8, 2478566), (16, 1239283), (17, 1166384), (34, 583192), (68, 291596), (136, 145798), (269, 73712), (271, 73168), (272, 72899), (538, 36856), (542, 36584), (1076, 18428), (1084, 18292), (2152, 9214), (2168, 9146), (4304, 4607), (4336, 4573)]