20119216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{491}}^1$

素因数の和:709

約数の個数: 40

約数和(自身を含む): 42278544

約数和(自身を除く): 22159328

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 197, 208, 394, 491, 788, 982, 1576, 1964, 2561, 3152, 3928, 5122, 6383, 7856, 10244, 12766, 20488, 25532, 40976, 51064, 96727, 102128, 193454, 386908, 773816, 1257451, 1547632, 2514902, 5029804, 10059608, 20119216]

約数ペア:

[(1, 20119216), (2, 10059608), (4, 5029804), (8, 2514902), (13, 1547632), (16, 1257451), (26, 773816), (52, 386908), (104, 193454), (197, 102128), (208, 96727), (394, 51064), (491, 40976), (788, 25532), (982, 20488), (1576, 12766), (1964, 10244), (2561, 7856), (3152, 6383), (3928, 5122)]