21861308

素因数分解:

$2^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{4973}}^1$

素因数の和:5141

約数の個数: 24

約数和(自身を含む): 44009952

約数和(自身を除く): 22148644

約数列:

[1, 2, 4, 7, 14, 28, 157, 314, 628, 1099, 2198, 4396, 4973, 9946, 19892, 34811, 69622, 139244, 780761, 1561522, 3123044, 5465327, 10930654, 21861308]

約数ペア:

[(1, 21861308), (2, 10930654), (4, 5465327), (7, 3123044), (14, 1561522), (28, 780761), (157, 139244), (314, 69622), (628, 34811), (1099, 19892), (2198, 9946), (4396, 4973)]