21980590

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59407}}^1$

素因数の和:59451

約数の個数: 16

約数和(自身を含む): 40635072

約数和(自身を除く): 18654482

約数列:

[1, 2, 5, 10, 37, 74, 185, 370, 59407, 118814, 297035, 594070, 2198059, 4396118, 10990295, 21980590]

約数ペア:

[(1, 21980590), (2, 10990295), (5, 4396118), (10, 2198059), (37, 594070), (74, 297035), (185, 118814), (370, 59407)]