21977025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1021}}^1$

素因数の和:1082

約数の個数: 48

約数和(自身を含む): 42580608

約数和(自身を除く): 20603583

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 75, 105, 123, 175, 205, 287, 525, 615, 861, 1021, 1025, 1435, 3063, 3075, 4305, 5105, 7147, 7175, 15315, 21441, 21525, 25525, 35735, 41861, 76575, 107205, 125583, 178675, 209305, 293027, 536025, 627915, 879081, 1046525, 1465135, 3139575, 4395405, 7325675, 21977025]

約数ペア:

[(1, 21977025), (3, 7325675), (5, 4395405), (7, 3139575), (15, 1465135), (21, 1046525), (25, 879081), (35, 627915), (41, 536025), (75, 293027), (105, 209305), (123, 178675), (175, 125583), (205, 107205), (287, 76575), (525, 41861), (615, 35735), (861, 25525), (1021, 21525), (1025, 21441), (1435, 15315), (3063, 7175), (3075, 7147), (4305, 5105)]