20852020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3169}}^1$

素因数の和:3232

約数の個数: 48

約数和(自身を含む): 51125760

約数和(自身を除く): 30273740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3169, 3290, 6338, 6580, 12676, 15845, 22183, 31690, 44366, 63380, 88732, 110915, 148943, 221830, 297886, 443660, 595772, 744715, 1042601, 1489430, 2085202, 2978860, 4170404, 5213005, 10426010, 20852020]

約数ペア:

[(1, 20852020), (2, 10426010), (4, 5213005), (5, 4170404), (7, 2978860), (10, 2085202), (14, 1489430), (20, 1042601), (28, 744715), (35, 595772), (47, 443660), (70, 297886), (94, 221830), (140, 148943), (188, 110915), (235, 88732), (329, 63380), (470, 44366), (658, 31690), (940, 22183), (1316, 15845), (1645, 12676), (3169, 6580), (3290, 6338)]