20187987956

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{678451}}^1$

素因数の和:678671

約数の個数: 24

約数和(自身を含む): 36359599584

約数和(自身を除く): 16171611628

約数列:

[1, 2, 4, 43, 86, 172, 173, 346, 692, 7439, 14878, 29756, 678451, 1356902, 2713804, 29173393, 58346786, 116693572, 117372023, 234744046, 469488092, 5046996989, 10093993978, 20187987956]

約数ペア:

[(1, 20187987956), (2, 10093993978), (4, 5046996989), (43, 469488092), (86, 234744046), (172, 117372023), (173, 116693572), (346, 58346786), (692, 29173393), (7439, 2713804), (14878, 1356902), (29756, 678451)]