21405208

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{3079}}^1$

素因数の和:3175

約数の個数: 32

約数和(自身を含む): 44352000

約数和(自身を除く): 22946792

約数列:

[1, 2, 4, 8, 11, 22, 44, 79, 88, 158, 316, 632, 869, 1738, 3079, 3476, 6158, 6952, 12316, 24632, 33869, 67738, 135476, 243241, 270952, 486482, 972964, 1945928, 2675651, 5351302, 10702604, 21405208]

約数ペア:

[(1, 21405208), (2, 10702604), (4, 5351302), (8, 2675651), (11, 1945928), (22, 972964), (44, 486482), (79, 270952), (88, 243241), (158, 135476), (316, 67738), (632, 33869), (869, 24632), (1738, 12316), (3079, 6952), (3476, 6158)]