20015940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47657}}^1$

素因数の和:47676

約数の個数: 48

約数和(自身を含む): 64052352

約数和(自身を除く): 44036412

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 47657, 95314, 142971, 190628, 238285, 285942, 333599, 476570, 571884, 667198, 714855, 953140, 1000797, 1334396, 1429710, 1667995, 2001594, 2859420, 3335990, 4003188, 5003985, 6671980, 10007970, 20015940]

約数ペア:

[(1, 20015940), (2, 10007970), (3, 6671980), (4, 5003985), (5, 4003188), (6, 3335990), (7, 2859420), (10, 2001594), (12, 1667995), (14, 1429710), (15, 1334396), (20, 1000797), (21, 953140), (28, 714855), (30, 667198), (35, 571884), (42, 476570), (60, 333599), (70, 285942), (84, 238285), (105, 190628), (140, 142971), (210, 95314), (420, 47657)]