201212121621

素因数分解:

$3^1\times 7^2\times {\mathrm{1368789943}}^1$

素因数の和:1368789960

約数の個数: 12

約数和(自身を含む): 312084107232

約数和(自身を除く): 110871985611

約数列:

[1, 3, 7, 21, 49, 147, 1368789943, 4106369829, 9581529601, 28744588803, 67070707207, 201212121621]

約数ペア:

[(1, 201212121621), (3, 67070707207), (7, 28744588803), (21, 9581529601), (49, 4106369829), (147, 1368789943)]