2018020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 4572288

約数和(自身を除く): 2554268

約数列:

[1, 2, 4, 5, 10, 20, 23, 41, 46, 82, 92, 107, 115, 164, 205, 214, 230, 410, 428, 460, 535, 820, 943, 1070, 1886, 2140, 2461, 3772, 4387, 4715, 4922, 8774, 9430, 9844, 12305, 17548, 18860, 21935, 24610, 43870, 49220, 87740, 100901, 201802, 403604, 504505, 1009010, 2018020]

約数ペア:

[(1, 2018020), (2, 1009010), (4, 504505), (5, 403604), (10, 201802), (20, 100901), (23, 87740), (41, 49220), (46, 43870), (82, 24610), (92, 21935), (107, 18860), (115, 17548), (164, 12305), (205, 9844), (214, 9430), (230, 8774), (410, 4922), (428, 4715), (460, 4387), (535, 3772), (820, 2461), (943, 2140), (1070, 1886)]