20689620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49261}}^1$

素因数の和:49280

約数の個数: 48

約数和(自身を含む): 66208128

約数和(自身を除く): 45518508

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, 49261, 98522, 147783, 197044, 246305, 295566, 344827, 492610, 591132, 689654, 738915, 985220, 1034481, 1379308, 1477830, 1724135, 2068962, 2955660, 3448270, 4137924, 5172405, 6896540, 10344810, 20689620]

約数ペア:

[(1, 20689620), (2, 10344810), (3, 6896540), (4, 5172405), (5, 4137924), (6, 3448270), (7, 2955660), (10, 2068962), (12, 1724135), (14, 1477830), (15, 1379308), (20, 1034481), (21, 985220), (28, 738915), (30, 689654), (35, 591132), (42, 492610), (60, 344827), (70, 295566), (84, 246305), (105, 197044), (140, 147783), (210, 98522), (420, 49261)]