25499440

素因数分解:

$2^4\times 5^1\times {\mathrm{318743}}^1$

素因数の和:318756

約数の個数: 20

約数和(自身を含む): 59286384

約数和(自身を除く): 33786944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 318743, 637486, 1274972, 1593715, 2549944, 3187430, 5099888, 6374860, 12749720, 25499440]

約数ペア:

[(1, 25499440), (2, 12749720), (4, 6374860), (5, 5099888), (8, 3187430), (10, 2549944), (16, 1593715), (20, 1274972), (40, 637486), (80, 318743)]