165080020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{168449}}^1$

素因数の和:168472

約数の個数: 36

約数和(自身を含む): 403269300

約数和(自身を除く): 238189280

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 168449, 336898, 673796, 842245, 1179143, 1684490, 2358286, 3368980, 4716572, 5895715, 8254001, 11791430, 16508002, 23582860, 33016004, 41270005, 82540010, 165080020]

約数ペア:

[(1, 165080020), (2, 82540010), (4, 41270005), (5, 33016004), (7, 23582860), (10, 16508002), (14, 11791430), (20, 8254001), (28, 5895715), (35, 4716572), (49, 3368980), (70, 2358286), (98, 1684490), (140, 1179143), (196, 842245), (245, 673796), (490, 336898), (980, 168449)]