30979809

素因数分解:

$3^2\times 7^2\times {\mathrm{70249}}^1$

素因数の和:70269

約数の個数: 18

約数和(自身を含む): 52055250

約数和(自身を除く): 21075441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 70249, 210747, 491743, 632241, 1475229, 3442201, 4425687, 10326603, 30979809]

約数ペア:

[(1, 30979809), (3, 10326603), (7, 4425687), (9, 3442201), (21, 1475229), (49, 632241), (63, 491743), (147, 210747), (441, 70249)]