20630470

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{593}}^1$

素因数の和:685

約数の個数: 48

約数和(自身を含む): 43879968

約数和(自身を除く): 23249498

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 71, 98, 142, 245, 355, 490, 497, 593, 710, 994, 1186, 2485, 2965, 3479, 4151, 4970, 5930, 6958, 8302, 17395, 20755, 29057, 34790, 41510, 42103, 58114, 84206, 145285, 210515, 290570, 294721, 421030, 589442, 1473605, 2063047, 2947210, 4126094, 10315235, 20630470]

約数ペア:

[(1, 20630470), (2, 10315235), (5, 4126094), (7, 2947210), (10, 2063047), (14, 1473605), (35, 589442), (49, 421030), (70, 294721), (71, 290570), (98, 210515), (142, 145285), (245, 84206), (355, 58114), (490, 42103), (497, 41510), (593, 34790), (710, 29057), (994, 20755), (1186, 17395), (2485, 8302), (2965, 6958), (3479, 5930), (4151, 4970)]