19390725

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1249}}^1$

素因数の和:1291

約数の個数: 48

約数和(自身を含む): 37200000

約数和(自身を除く): 17809275

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 135, 207, 225, 345, 575, 621, 675, 1035, 1249, 1725, 3105, 3747, 5175, 6245, 11241, 15525, 18735, 28727, 31225, 33723, 56205, 86181, 93675, 143635, 168615, 258543, 281025, 430905, 718175, 775629, 843075, 1292715, 2154525, 3878145, 6463575, 19390725]

約数ペア:

[(1, 19390725), (3, 6463575), (5, 3878145), (9, 2154525), (15, 1292715), (23, 843075), (25, 775629), (27, 718175), (45, 430905), (69, 281025), (75, 258543), (115, 168615), (135, 143635), (207, 93675), (225, 86181), (345, 56205), (575, 33723), (621, 31225), (675, 28727), (1035, 18735), (1249, 15525), (1725, 11241), (3105, 6245), (3747, 5175)]