19720656

素因数分解:

$2^4\times 3^2\times {\mathrm{136949}}^1$

素因数の和:136963

約数の個数: 30

約数和(自身を含む): 55190850

約数和(自身を除く): 35470194

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 136949, 273898, 410847, 547796, 821694, 1095592, 1232541, 1643388, 2191184, 2465082, 3286776, 4930164, 6573552, 9860328, 19720656]

約数ペア:

[(1, 19720656), (2, 9860328), (3, 6573552), (4, 4930164), (6, 3286776), (8, 2465082), (9, 2191184), (12, 1643388), (16, 1232541), (18, 1095592), (24, 821694), (36, 547796), (48, 410847), (72, 273898), (144, 136949)]