66128080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{20161}}^1$

素因数の和:20215

約数の個数: 40

約数和(自身を含む): 157505544

約数和(自身を除く): 91377464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 20161, 40322, 80644, 100805, 161288, 201610, 322576, 403220, 806440, 826601, 1612880, 1653202, 3306404, 4133005, 6612808, 8266010, 13225616, 16532020, 33064040, 66128080]

約数ペア:

[(1, 66128080), (2, 33064040), (4, 16532020), (5, 13225616), (8, 8266010), (10, 6612808), (16, 4133005), (20, 3306404), (40, 1653202), (41, 1612880), (80, 826601), (82, 806440), (164, 403220), (205, 322576), (328, 201610), (410, 161288), (656, 100805), (820, 80644), (1640, 40322), (3280, 20161)]