8266020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19681}}^1$

素因数の和:19700

約数の個数: 48

約数和(自身を含む): 26452608

約数和(自身を除く): 18186588

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 19681, 39362, 59043, 78724, 98405, 118086, 137767, 196810, 236172, 275534, 295215, 393620, 413301, 551068, 590430, 688835, 826602, 1180860, 1377670, 1653204, 2066505, 2755340, 4133010, 8266020]

約数ペア:

[(1, 8266020), (2, 4133010), (3, 2755340), (4, 2066505), (5, 1653204), (6, 1377670), (7, 1180860), (10, 826602), (12, 688835), (14, 590430), (15, 551068), (20, 413301), (21, 393620), (28, 295215), (30, 275534), (35, 236172), (42, 196810), (60, 137767), (70, 118086), (84, 98405), (105, 78724), (140, 59043), (210, 39362), (420, 19681)]