81144640

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4157}}^1$

素因数の和:4235

約数の個数: 56

約数和(自身を含む): 196440552

約数和(自身を除く): 115295912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 244, 305, 320, 488, 610, 976, 1220, 1952, 2440, 3904, 4157, 4880, 8314, 9760, 16628, 19520, 20785, 33256, 41570, 66512, 83140, 133024, 166280, 253577, 266048, 332560, 507154, 665120, 1014308, 1267885, 1330240, 2028616, 2535770, 4057232, 5071540, 8114464, 10143080, 16228928, 20286160, 40572320, 81144640]

約数ペア:

[(1, 81144640), (2, 40572320), (4, 20286160), (5, 16228928), (8, 10143080), (10, 8114464), (16, 5071540), (20, 4057232), (32, 2535770), (40, 2028616), (61, 1330240), (64, 1267885), (80, 1014308), (122, 665120), (160, 507154), (244, 332560), (305, 266048), (320, 253577), (488, 166280), (610, 133024), (976, 83140), (1220, 66512), (1952, 41570), (2440, 33256), (3904, 20785), (4157, 19520), (4880, 16628), (8314, 9760)]