421978000

素因数分解:

$2^4\times 5^3\times {\mathrm{101}}^1\times {\mathrm{2089}}^1$

素因数の和:2213

約数の個数: 80

約数和(自身を含む): 1030938480

約数和(自身を除く): 608960480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 125, 200, 202, 250, 400, 404, 500, 505, 808, 1000, 1010, 1616, 2000, 2020, 2089, 2525, 4040, 4178, 5050, 8080, 8356, 10100, 10445, 12625, 16712, 20200, 20890, 25250, 33424, 40400, 41780, 50500, 52225, 83560, 101000, 104450, 167120, 202000, 208900, 210989, 261125, 417800, 421978, 522250, 835600, 843956, 1044500, 1054945, 1687912, 2089000, 2109890, 3375824, 4178000, 4219780, 5274725, 8439560, 10549450, 16879120, 21098900, 26373625, 42197800, 52747250, 84395600, 105494500, 210989000, 421978000]

約数ペア:

[(1, 421978000), (2, 210989000), (4, 105494500), (5, 84395600), (8, 52747250), (10, 42197800), (16, 26373625), (20, 21098900), (25, 16879120), (40, 10549450), (50, 8439560), (80, 5274725), (100, 4219780), (101, 4178000), (125, 3375824), (200, 2109890), (202, 2089000), (250, 1687912), (400, 1054945), (404, 1044500), (500, 843956), (505, 835600), (808, 522250), (1000, 421978), (1010, 417800), (1616, 261125), (2000, 210989), (2020, 208900), (2089, 202000), (2525, 167120), (4040, 104450), (4178, 101000), (5050, 83560), (8080, 52225), (8356, 50500), (10100, 41780), (10445, 40400), (12625, 33424), (16712, 25250), (20200, 20890)]