19916784

素因数分解:

$2^4\times 3^2\times {\mathrm{138311}}^1$

素因数の和:138325

約数の個数: 30

約数和(自身を含む): 55739736

約数和(自身を除く): 35822952

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 138311, 276622, 414933, 553244, 829866, 1106488, 1244799, 1659732, 2212976, 2489598, 3319464, 4979196, 6638928, 9958392, 19916784]

約数ペア:

[(1, 19916784), (2, 9958392), (3, 6638928), (4, 4979196), (6, 3319464), (8, 2489598), (9, 2212976), (12, 1659732), (16, 1244799), (18, 1106488), (24, 829866), (36, 553244), (48, 414933), (72, 276622), (144, 138311)]