21078260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150559}}^1$

素因数の和:150575

約数の個数: 24

約数和(自身を含む): 50588160

約数和(自身を除く): 29509900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150559, 301118, 602236, 752795, 1053913, 1505590, 2107826, 3011180, 4215652, 5269565, 10539130, 21078260]

約数ペア:

[(1, 21078260), (2, 10539130), (4, 5269565), (5, 4215652), (7, 3011180), (10, 2107826), (14, 1505590), (20, 1053913), (28, 752795), (35, 602236), (70, 301118), (140, 150559)]