81001120

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2797}}^1$

素因数の和:2993

約数の個数: 48

約数和(自身を含む): 192491208

約数和(自身を除く): 111490088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 724, 905, 1448, 1810, 2797, 2896, 3620, 5594, 5792, 7240, 11188, 13985, 14480, 22376, 27970, 28960, 44752, 55940, 89504, 111880, 223760, 447520, 506257, 1012514, 2025028, 2531285, 4050056, 5062570, 8100112, 10125140, 16200224, 20250280, 40500560, 81001120]

約数ペア:

[(1, 81001120), (2, 40500560), (4, 20250280), (5, 16200224), (8, 10125140), (10, 8100112), (16, 5062570), (20, 4050056), (32, 2531285), (40, 2025028), (80, 1012514), (160, 506257), (181, 447520), (362, 223760), (724, 111880), (905, 89504), (1448, 55940), (1810, 44752), (2797, 28960), (2896, 27970), (3620, 22376), (5594, 14480), (5792, 13985), (7240, 11188)]