820135900

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{211}}^1\times {\mathrm{827}}^1$

素因数の和:1099

約数の個数: 72

約数和(自身を含む): 1828382976

約数和(自身を除く): 1008247076

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 188, 211, 235, 422, 470, 827, 844, 940, 1055, 1175, 1654, 2110, 2350, 3308, 4135, 4220, 4700, 5275, 8270, 9917, 10550, 16540, 19834, 20675, 21100, 38869, 39668, 41350, 49585, 77738, 82700, 99170, 155476, 174497, 194345, 198340, 247925, 348994, 388690, 495850, 697988, 777380, 872485, 971725, 991700, 1744970, 1943450, 3489940, 3886900, 4362425, 8201359, 8724850, 16402718, 17449700, 32805436, 41006795, 82013590, 164027180, 205033975, 410067950, 820135900]

約数ペア:

[(1, 820135900), (2, 410067950), (4, 205033975), (5, 164027180), (10, 82013590), (20, 41006795), (25, 32805436), (47, 17449700), (50, 16402718), (94, 8724850), (100, 8201359), (188, 4362425), (211, 3886900), (235, 3489940), (422, 1943450), (470, 1744970), (827, 991700), (844, 971725), (940, 872485), (1055, 777380), (1175, 697988), (1654, 495850), (2110, 388690), (2350, 348994), (3308, 247925), (4135, 198340), (4220, 194345), (4700, 174497), (5275, 155476), (8270, 99170), (9917, 82700), (10550, 77738), (16540, 49585), (19834, 41350), (20675, 39668), (21100, 38869)]