81042160

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16607}}^1$

素因数の和:16681

約数の個数: 40

約数和(自身を含む): 191523456

約数和(自身を除く): 110481296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 16607, 33214, 66428, 83035, 132856, 166070, 265712, 332140, 664280, 1013027, 1328560, 2026054, 4052108, 5065135, 8104216, 10130270, 16208432, 20260540, 40521080, 81042160]

約数ペア:

[(1, 81042160), (2, 40521080), (4, 20260540), (5, 16208432), (8, 10130270), (10, 8104216), (16, 5065135), (20, 4052108), (40, 2026054), (61, 1328560), (80, 1013027), (122, 664280), (244, 332140), (305, 265712), (488, 166070), (610, 132856), (976, 83035), (1220, 66428), (2440, 33214), (4880, 16607)]