21861441

素因数分解:

$3^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1123}}^1$

素因数の和:1242

約数の個数: 32

約数和(自身を含む): 37406720

約数和(自身を除く): 15545279

約数列:

[1, 3, 7, 9, 21, 27, 63, 103, 189, 309, 721, 927, 1123, 2163, 2781, 3369, 6489, 7861, 10107, 19467, 23583, 30321, 70749, 115669, 212247, 347007, 809683, 1041021, 2429049, 3123063, 7287147, 21861441]

約数ペア:

[(1, 21861441), (3, 7287147), (7, 3123063), (9, 2429049), (21, 1041021), (27, 809683), (63, 347007), (103, 212247), (189, 115669), (309, 70749), (721, 30321), (927, 23583), (1123, 19467), (2163, 10107), (2781, 7861), (3369, 6489)]