18940295

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 26873856

約数和(自身を除く): 7933561

約数列:

[1, 5, 11, 17, 47, 55, 85, 187, 235, 431, 517, 799, 935, 2155, 2585, 3995, 4741, 7327, 8789, 20257, 23705, 36635, 43945, 80597, 101285, 222827, 344369, 402985, 1114135, 1721845, 3788059, 18940295]

約数ペア:

[(1, 18940295), (5, 3788059), (11, 1721845), (17, 1114135), (47, 402985), (55, 344369), (85, 222827), (187, 101285), (235, 80597), (431, 43945), (517, 36635), (799, 23705), (935, 20257), (2155, 8789), (2585, 7327), (3995, 4741)]