12545440

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{881}}^1$

素因数の和:985

約数の個数: 48

約数和(自身を含む): 30005640

約数和(自身を除く): 17460200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 881, 890, 1424, 1762, 1780, 2848, 3524, 3560, 4405, 7048, 7120, 8810, 14096, 14240, 17620, 28192, 35240, 70480, 78409, 140960, 156818, 313636, 392045, 627272, 784090, 1254544, 1568180, 2509088, 3136360, 6272720, 12545440]

約数ペア:

[(1, 12545440), (2, 6272720), (4, 3136360), (5, 2509088), (8, 1568180), (10, 1254544), (16, 784090), (20, 627272), (32, 392045), (40, 313636), (80, 156818), (89, 140960), (160, 78409), (178, 70480), (356, 35240), (445, 28192), (712, 17620), (881, 14240), (890, 14096), (1424, 8810), (1762, 7120), (1780, 7048), (2848, 4405), (3524, 3560)]