840008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 1746360

約数和(自身を除く): 906352

約数列:

[1, 2, 4, 8, 13, 26, 41, 52, 82, 104, 164, 197, 328, 394, 533, 788, 1066, 1576, 2132, 2561, 4264, 5122, 8077, 10244, 16154, 20488, 32308, 64616, 105001, 210002, 420004, 840008]

約数ペア:

[(1, 840008), (2, 420004), (4, 210002), (8, 105001), (13, 64616), (26, 32308), (41, 20488), (52, 16154), (82, 10244), (104, 8077), (164, 5122), (197, 4264), (328, 2561), (394, 2132), (533, 1576), (788, 1066)]