20986700

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4283}}^1$

素因数の和:4311

約数の個数: 54

約数和(自身を含む): 52988796

約数和(自身を除く): 32002096

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4283, 4900, 8566, 17132, 21415, 29981, 42830, 59962, 85660, 107075, 119924, 149905, 209867, 214150, 299810, 419734, 428300, 599620, 749525, 839468, 1049335, 1499050, 2098670, 2998100, 4197340, 5246675, 10493350, 20986700]

約数ペア:

[(1, 20986700), (2, 10493350), (4, 5246675), (5, 4197340), (7, 2998100), (10, 2098670), (14, 1499050), (20, 1049335), (25, 839468), (28, 749525), (35, 599620), (49, 428300), (50, 419734), (70, 299810), (98, 214150), (100, 209867), (140, 149905), (175, 119924), (196, 107075), (245, 85660), (350, 59962), (490, 42830), (700, 29981), (980, 21415), (1225, 17132), (2450, 8566), (4283, 4900)]