21957260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1069}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 50332800

約数和(自身を除く): 28375540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1069, 1580, 2054, 2138, 4108, 4276, 5135, 5345, 10270, 10690, 13897, 20540, 21380, 27794, 55588, 69485, 84451, 138970, 168902, 277940, 337804, 422255, 844510, 1097863, 1689020, 2195726, 4391452, 5489315, 10978630, 21957260]

約数ペア:

[(1, 21957260), (2, 10978630), (4, 5489315), (5, 4391452), (10, 2195726), (13, 1689020), (20, 1097863), (26, 844510), (52, 422255), (65, 337804), (79, 277940), (130, 168902), (158, 138970), (260, 84451), (316, 69485), (395, 55588), (790, 27794), (1027, 21380), (1069, 20540), (1580, 13897), (2054, 10690), (2138, 10270), (4108, 5345), (4276, 5135)]