85808080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26161}}^1$

素因数の和:26215

約数の個数: 40

約数和(自身を含む): 204377544

約数和(自身を除く): 118569464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 26161, 52322, 104644, 130805, 209288, 261610, 418576, 523220, 1046440, 1072601, 2092880, 2145202, 4290404, 5363005, 8580808, 10726010, 17161616, 21452020, 42904040, 85808080]

約数ペア:

[(1, 85808080), (2, 42904040), (4, 21452020), (5, 17161616), (8, 10726010), (10, 8580808), (16, 5363005), (20, 4290404), (40, 2145202), (41, 2092880), (80, 1072601), (82, 1046440), (164, 523220), (205, 418576), (328, 261610), (410, 209288), (656, 130805), (820, 104644), (1640, 52322), (3280, 26161)]