20286160

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4157}}^1$

素因数の和:4231

約数の個数: 40

約数和(自身を含む): 47950056

約数和(自身を除く): 27663896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4157, 4880, 8314, 16628, 20785, 33256, 41570, 66512, 83140, 166280, 253577, 332560, 507154, 1014308, 1267885, 2028616, 2535770, 4057232, 5071540, 10143080, 20286160]

約数ペア:

[(1, 20286160), (2, 10143080), (4, 5071540), (5, 4057232), (8, 2535770), (10, 2028616), (16, 1267885), (20, 1014308), (40, 507154), (61, 332560), (80, 253577), (122, 166280), (244, 83140), (305, 66512), (488, 41570), (610, 33256), (976, 20785), (1220, 16628), (2440, 8314), (4157, 4880)]