21868175

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 33331200

約数和(自身を除く): 11463025

約数列:

[1, 5, 7, 25, 29, 31, 35, 139, 145, 155, 175, 203, 217, 695, 725, 775, 899, 973, 1015, 1085, 3475, 4031, 4309, 4495, 4865, 5075, 5425, 6293, 20155, 21545, 22475, 24325, 28217, 30163, 31465, 100775, 107725, 124961, 141085, 150815, 157325, 624805, 705425, 754075, 874727, 3124025, 4373635, 21868175]

約数ペア:

[(1, 21868175), (5, 4373635), (7, 3124025), (25, 874727), (29, 754075), (31, 705425), (35, 624805), (139, 157325), (145, 150815), (155, 141085), (175, 124961), (203, 107725), (217, 100775), (695, 31465), (725, 30163), (775, 28217), (899, 24325), (973, 22475), (1015, 21545), (1085, 20155), (3475, 6293), (4031, 5425), (4309, 5075), (4495, 4865)]