17988685

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 25683840

約数和(自身を除く): 7695155

約数列:

[1, 5, 11, 13, 55, 65, 139, 143, 181, 695, 715, 905, 1529, 1807, 1991, 2353, 7645, 9035, 9955, 11765, 19877, 25159, 25883, 99385, 125795, 129415, 276749, 327067, 1383745, 1635335, 3597737, 17988685]

約数ペア:

[(1, 17988685), (5, 3597737), (11, 1635335), (13, 1383745), (55, 327067), (65, 276749), (139, 129415), (143, 125795), (181, 99385), (695, 25883), (715, 25159), (905, 19877), (1529, 11765), (1807, 9955), (1991, 9035), (2353, 7645)]